Emergency Procedures for the CESSNA 172Q CUTLASS

8.2 Briefing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287 8.3 SARTIME management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 290 Part 9 Control practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .291 9.1 Provision of FIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293 9.2 Clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305 9.3 Altimetry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316 9.4 Level assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320 9.5 Speed control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328 9.6 Holding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332 9.7 ATS surveillance system procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333 9.8 Data Link procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354 9.9 Management of formation flights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358 Part 10 Separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .361 10.1 Responsibilities for separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 364 10.2 ATS surveillance system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 369 10.3 Longitudinal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 374 10.4 Lateral . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 434 10.5 Vertical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 473 10.6 Wake turbulence separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 478 10.7 Visual - ATC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 486 10.8 Visual - pilot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 489 10.9 Aerodrome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 491 10.10 Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 512 Part 11 Approach control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .517 11.1 Arriving aircraft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 518 11.2 Departing aircraft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 539 Part 12 Aerodrome control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .547 12.1 Aerodrome control functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 549 12.2 Runway selection and aerodrome information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 551 12.3 Movement area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 559 12.4 Departing aircraft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 568 12.5 Arriving aircraft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 570 12.6 Helicopters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 580 12.7 Control of manoeuvring area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 582 12.8 Low Visibility Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 586 12.9 Use of surveillance equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 591 12.10 Tower Flight Progress Strips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 597 12.11 Operation of aerodrome lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 598 12.12 ILS signal interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 602 12.13 Operation of standby generating plant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 607 MATS Version 75.1 Effective: 19 March 2026 to 08 July 2026 P 5 Part 13 Forms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 609 13.1 MATS forms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 610 P 6 Effective: 19 March 2026 to 08 July 2026 MATS Version 75.1 MATS Version 75.1 Effective: 19 March 2026 to 08 July 2026 P 7 What’s Changed This release incorporates changes from the following Change Requests, which have already been approved by the Change Implementation Group: Title Description of change Change Request Number Safety Alert definition update Updates Safety Alert definition to align with the instructions in 9.1.4.3 and 4.2.21.1 Section affected: 1.1.1 46180 Reporting suspected harmful interference Updates the agency to which suspected malicious interference must be reported. Section affected: 2.7.3 46339 Displaced threshold during runway works A number of safety occurrences have been seen in Australia related to reduced runway lengths during runway works necessitating improved dissemination of information to pilots as an additional barrier to these occurrences. Sections affected: 3.1.1, 9.1.3, 12.2.2 46139 Microflite editorial correction Correction for a transcription error in MATS v74 Section affected: 6.2.1 47256 Defence Callsigns - 12SQN Transfer 'Buffalo' callsign from C SQN /Townsville to new unit 12 SQN. Transfer 'Vengeance' callsign from 2FTS Pearce to new unit 12 SQN. Section affected: 6.2.2 47201 CAR and LAHSO editorials Removes reference to superseded CARs and better aligns LAHSO active participant list to AIP. Section affected: Index, 10.9.5 46340 IVA requirements not met Updates procedures for when independent parallel visual approach conditions are not met or lost to include a safety alert and avoiding action as necessary Section affected: 11.1.7 46341 Stop bars Amends stop bar responsibilities to match AIP changes. Sections affected: 12.3.1, 12.11.1 47199 TSAD separation requirements Adds more specific requirements for the application of lateral separation using TSAD. Section affected: 12.9.4 46337 Leidos LAHSO participation Refer IMA_V75_01 Leidos operate DH8B and C aircraft for Borderforce, and CL60 for AMSA under con-tract arrangements. As these are Australian registered aircraft of Cat A/B/C operating under an FNC, ATC may assume they are capable of active participation in LAHSO in accordance with AIP ENR 1.1 para 7.4.1c. Leidos has advised Airservices and Defence their aircraft are not authorised for active LAHSO participation, but are authorised as passive LAHSO participants requiring an update to the list of approved operators in MATS 10.9.5.6. 50788 P 8 Effective: 19 March 2026 to 08 July 2026 MATS Version 75.1 8 MATS Version 75.1 Effective: 19 March 2026 to 08 July 2026 P 9 Index A AAR methods . . . . . . . . . . . . . . . . . . . . 5.1.10.1 ACP message application . . . . . . . . . . . . . 7.1.6.4 Activities, aviation and non-aviation . . . . . 2.4.8.4 ADS-B diverging or converging route clearances . . . . . . . . . . . . .10.3.4.10 emergency . . . . . . . . . . . . . . . . . . . . . 4.2.18 ADS-C and non ADS-C, measurement between . . . . . . . . . . . . . . 10.3.7.2 boundaries . . . . . . . . . . . . . . . . . . . . . . 9.8.3 connection management . . . . . . . . . . . . 9.8.2 data authority . . . . . . . . . . . . . . . . . . . 9.8.3 data link failures . . . . . . . . . . . . . . . . . . 9.8.4 distance conditions . . . . . . . . . . . . . . . 10.3.7 diverging or converging . . . . . . . . . . 10.3.7.7 emergency . . . . . . . . . . . . . . . . . . . . . 4.2.18 level requires updating . . . . . . . . . . . 9.8.5.2 methods of determining separation . 10.3.2.3 next data authority . . . . . . . . . . . . . . 9.8.3.2 position symbols . . . . . . . . . . . . . . . 10.3.7.4 reporting rate . . . . . . . . . . . . . . . . 10.3.7.1.1 reports . . . . . . . . . . . . . . . . . . . . . 10.3.7.3 using . . . . . . . . . . . . . . . . . . . . . . . 10.3.7.1 vertical separation . . . . . . . . . . . . . 10.5.1.3 Demand Control Request . . . . . . . 9.8.5.2 Aerodrome beacon . . . . . . . . . . . . . . . . . . . . .12.11.1.5 GDP diverting . . . . . . . . . . . . . . . . . 2.3.3.2.6 helicopter . . . . . . . . . . . . . . . . . . . . . 12.1.1 issuing . . . . . . . . . . . . . . . . . . . . . . . . 12.1.1 lighting . . . . . . . . . . . . . . . . . . . . .12.11.1.1 observation . . . . . . . . . . . . . . . . 12.11.3 partial failure of runway . . . . . .12.11.3.2 portable lighting . . . . . . . . . . . . . . . . 12.11.2 requirements . . . . . . . . . . . . . .12.11.2.2 radio or signal lights . . . . . . . . . . . . . . 12.7.3 works inside the runway strip . . . . . . . 12.7.2.3 operating procedures . . . . . . . . 12.7.2.2 responsibilities . . . . . . . . . 12.7.2, 12.7.3 safety precautions . . . . . . . . . . 12.7.2.2 Aerodrome control clearance, start approval . . . . . . . . . 12.3.1.2 clearances, thrust stream turbulence 12.1.1.3 instructions and clearances flight progress data . . . . . . . . . .12.10.1.3 jet aircraft . . . . . . . . . . . . . . . . . . . 12.3.1.9 primary function . . . . . . . . . . . . . . . 12.1.1.2 reports, flight progress data . . . . . .12.10.1.2 service TSAD, exception . . . . . . . . . . . . 12.9.4.4 use of, ATS surveillance system . . . 12.9.1 services on aprons . . . . . . . . . . . . . 12.1.1.6 taxi instructions, visiting aircraft . . . . 12.3.1.8 time check . . . . . . . . . . . . . . . . 12.3.1.7 taxiing across runways . . . . . . . . . . . . 12.3.1.12 on grassed areas . . . . . . . . . . . 12.3.1.10 on runway . . . . . . . . . . . . . . . . 12.3.1.11 Aerodrome Ground Surveillance System (AGSS) application . . . . . . . . . . . . . . . . . . . 12.9.3.2 augment visual observation . . . . . . . 12.9.3.1 identification . . . . . . . . . . . . . . . . . . 12.9.3.4 methods . . . . . . . . . . . . . . . . . . 12.9.3.5 taxi guidance instructions . . . . . . . . . 12.9.3.3 Aerodrome information ATIS, meteorology . . . . . . . . . . . . . . . . 3.1.1 MET . . . . . . . . . . . . . . . . . . . . . . . . . 3.1.2.1 data transmission . . . . . . . . . . . . . 3.1.5 revision . . . . . . . . . . . . . . . . . . . . . . . . 3.1.2 take-off or landing . . . . . . . . . . . . . . . 9.1.3.8 wind shear . . . . . . . . . . . . . . . . . . . . . 3.1.3 ZULU . . . . . . . . . . . . . . . . . . . . . . . . 3.1.1.8 AFS message - categories . . . . . . . . . . . . . 7.1.5.6 AFTN messages . . . . . . . . . . . . . . . . . . . . 7.1.12 automatic service message procedure 7.1.11.4 categories . . . . . . . . . . . . . . . . . . . . . 7.1.5.6 check messages . . . . . . . . . . . . . . . 7.1.11.3 CNL . . . . . . . . . . . . . . . . . . . . . . . . . 7.1.5.6 DD priority indicator, application . . . . 7.1.12.3 FF priority indicator, application . . . . 7.1.12.4 GG priority indicator, application . . . . . . 7.1.12.5, 7.1.12.6 KK priority indicator, application . . . . 7.1.12.7 management . . . . . . . . . . . . . . . . . . . 7.1.11 origination and distribution . . . . . . . . . . 7.1.1 priority indicators . . . . . . . . . . . 7.1.12, 7.1.12.2 order . . . . . . . . . . . . . . . . . . . . . 7.1.12 SS acknowledgement . . . . . . . . . . . 7.1.11.5 priority indicator application . . . . 7.1.12.2 test message transmission . . . . . . . . . 7.1.11 Airborne Early Warning and Control suspected interference . . . . . . . . . . . 5.1.11.1 Aircraft approach, not reporting established . . 11.1.2.3 arriving control . . . . . . . . . . . . . . . . . . . . 12.5.1 instructions . . . . . . . . . . . . . . . . 12.5.1.1 characteristics speed control data table . . . . . . . . 9.5.1.4 departing control . . . . . . . . . . . . . . . . 12.4.1 identification . . . . . . . . . . . . . . . . . . . . 9.7.2 relaying . . . . . . . . . . . . . . . . . . . 9.7.6.1 transfer . . . . . . . . . . . . . . . . . . . . . 9.7.6 TSAD . . . . . . . . . . . . . . . . . . . . . 12.9.4 position, determining . . . . . . . . . . . . . 10.4.3 separation, navigation tolerance . . . . 10.2.1.8 sequence . . . . . . . . . . . . . . . . . . . . . 11.1.1 tolerances . . . . . . . . . . . . . . . . . . . . 10.4.3.1 within and outside of surveillance Index P 10 Effective: 19 March 2026 to 08 July 2026 MATS Version 75.1 22 Index coverage separation . . . . . . 10.2.1.9 without surveillance equipment . . . . . . 9.7.14 clearances . . . . . . . . . . . . . . . . . 9.7.14.1 report . . . . . . . . . . . . . . . . . . . . 9.7.14.2 safety considerations . . . . . . . 9.7.14.1.2 AIREP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.1.7 distribution . . . . . . . . . . . . . . . . . . . . 7.1.7.2 airline companies . . . . . . . . . . . 7.1.7.3.2 initiating . . . . . . . . . . . . . . . . . . . . 7.1.7 Airfield closure . . . . . . . . . . . . . . . . . . . . . 4.3.7 Airspace boundaries, crossing . . . . . . . . . . . . 10.4.9.8 changes civil . . . . . . . . . . . . . . . . . . . 2.4.2.4 Class A . . . . . . . . . . . . . . . . . . . . . . . . 2.4.1 deactivating . . . . . . . . . . . . . . . . . . . . 2.4.4 designation . . . . . . . . . . . . . . . . . . . . . 2.4.6 establishment of classes . . . . . . . . . . . . 2.4.2 flight requirements . . . . . . . . . . . . . . . . 2.4.1 management defence . . . . . . . . . . . . . 2.4.2.3 military, air defence operations . . . . . . . 2.4.7 reservation . . . . . . . . . . . . . . . . . . . . 2.4.6.1 services provided . . . . . . . . . . . . . . . . . 2.4.1 shared vertical or lateral boundaries . . 2.4.1.3 speed restrictions . . . . . . . . . . . . . 2.4.1.1.2 VFR AWK aircraft . . . . . . . . . . . . . . . . 2.4.1.4 Alerting service FIS . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.1.4 ALR, alerting message . . . . . . . . . . . . . . . . 7.1.4 Altimeter settings . . . . . . . . . . . . . . . . . . . 9.3.1 transition layer . . . . . . . . . . . . . . . . . 9.3.1.3 transition levels . . . . . . . . . . . . . . . . . 9.3.1.4 Approach aircraft not reporting established . . . . 11.1.2.3 final, vectoring . . . . . . . . . . . . . . . . . 11.1.2 independent parallel visual . . . . . . . . 11.1.7.1 instrument . . . . . . . . . . . . . . . . . . . 11.1.10 clearance . . . . . . . . . . . . . . . . . 11.1.1.3 procedures . . . . . . . . . . . . . . . . . . . . 11.1.1 SODPROPS . . . . . . . . . . . . . . . . . . . . 11.1.9 vectoring through final . . . . . . . . . . . 11.1.2.4 visual . . . . . . . . . . . . . . . . . . . . . . . 11.1.11 authorising . . . . . . . . . . . . . . . 11.1.11.1 Area navigation distance conditions . . . . . . . . . . . . . . . . . . . . . 10.3.6 standards . . . . . . . . . . . . . . . . . . . . 10.3.6.1 ARFF emergency frequency pilot initiation . 4.3.5.1 ARR message procedures . . . . . . . . . . . . . 7.1.5.8 Arrival control . . . . . . . . . . . . . . . . . . . . . . . 12.5.1 procedures . . . . . . . . . . . . . . 11.1.1, 12.5.1 Arriving aircraft - distance separation . . . 10.3.12 Asymmetric training approval . . . . . . . . . 12.5.6.3 ATC defence . . . . . . . . . . . . . . . . . . . . . . . 2.4.7 objectives . . . . . . . . . . . . . . . . . . . . . 2.2.1.1 ATIS MET data transmission . . . . . . . . . . . . . . 3.1.5 information . . . . . . . . . . . . . . . . . 3.1.2.1 recording messages . . . . . . . . . . . . . . .3.1.1 revising . . . . . . . . . . . . . . . . . . . . . . . .3.1.2 wind shear . . . . . . . . . . . . . . . . . . . . . .3.1.3 ZULU . . . . . . . . . . . . . . . . . . . . . . . . 3.1.1.8 ATM system failures LR/LS . . . . . . . . . . . . . . . . . . . . . . . 7.2.1.3 responsibilities, reporting . . . . . . . . . . . .7.2.1 ATS messages addressing procedures . . . . . . . . . . .7.1.3 ALR . . . . . . . . . . . . . . . . . . . . . . 7.1.4.1 distribution procedures . . . . . . . . . .7.1.1 international flights . . . . . . . . . . . . .7.1.3 origination procedures . . . . . . . . . . .7.1.1 specific addressing requirements . . . . 7.1.3, 7.1.3.3 unit providing Class G airspace services . . . . . . . . . . . . . . . 6.3.4.17 within military Restricted Areas . . . . . 2.4.2.2 ATS surveillance service identification, vectoring . . . . . . . . . . 12.9.1.2 termination control . . . . . . . . . . . . . . . . . . . 9.7.13.2 surveillance . . . . . . . . . . . . . . . . .9.7.13 transferring aircraft . . . . . . . . . . . . . 9.7.13.3 variation . . . . . . . . . . . . . . . . . . . . . .9.7.13 ATS surveillance system application, controlled airspace . . . . 10.2.1.7 cloud break procedure . . . . . . . . . . . . .11.1.4 direction, heading or tracking . . . . . . 12.9.1.4 function . . . . . . . . . . . . . . . . . . . . 12.9.1.1.1 separation minima . . . . . . . . . . . . . 10.2.2.3 situation display, application . . . . . . 12.9.1.3 ATSO responsibilities . . . . . . . . . . . . . . . . . .9.1.2 B Balloons manned . . . . . . . . . . . . . . . . . . . . 10.10.2.1 traffic information . . . . . . . . . . 10.10.2.2 meteorological BoM notification . . . . . . . . . . . . . . .5.1.1 delay release, conflict . . . . . . . . . 5.1.1.2 release . . . . . . . . . . . . . . . . . . . . . .5.1.1 unmanned free . . . . . . . . . . . . . . . . . 10.10.1 lateral navigation tolerances . . . 10.10.1.3 letter of agreement . . . . . . . . . 10.10.1.5 plotting track . . . . . . . . . . . . . 10.10.1.4 transit below . . . . . . . . . . . . . 10.10.1.2 visual separation . . . . . . . . . . . 10.10.1.1 Beacons aerodrome . . . . . . . . . . . . . . . . . . 12.11.1.5 DME, co-sited . . . . . . . . . . . . . . . . . 10.3.4.6 Blanket clearances, use . . . . . . . . . . . . . . 9.2.3.1 BLSP calculation . . . . . . . . . . . . . . . . . 10.4.10.6.1 determining . . . . . . . . . . . . . . . . . . 10.4.4.2 MATS Version 75.1 Effective: 19 March 2026 to 08 July 2026 P 11 Index BoM MET balloon release . . . . . . . . . . . . . . . 5.1.1 unforecast conditions notification . . . . 3.2.1.1 Bomb hung . . . . . . . . . . . . . . . . . . . . . . . . . 4.2.16 vague warning . . . . . . . . . . . . . . . . . 4.2.7.5 warning procedure . . . . . . . . . . . . . . . . 4.2.7 Boundaries, ADS-C . . . . . . . . . . . . . . . . . . . 9.8.3 Boundary coordination . . . . . . . . . . . . . 6.3.4.14 Braking action advice . . . . . . . . . . . . . . . . . . . . . . 12.2.3.7 descriptors . . . . . . . . . . . . . . . . . . . 12.2.3.8 reports . . . . . . . . . . . . . . . . . . . . . 12.2.3.6 Briefing ATS clarify flight plan content . . . . . . 8.2.1.4 flight notification process . . . . . . . . . . 8.2.1.3 International . . . . . . . . . . . . . . . . . . 8.2.1.2 Ionospheric prediction service . . . . . . 8.2.1.2 post flight report . . . . . . . . . . . . . . . 8.2.1.5 services and content . . . . . . . . . . . . . 8.2.1.1 Buffer, vertical . . . . . . . . . . . . . . . . . . . . . . 9.4.3 with base of CTA IFR aircraft . . . . . . . . . . . . . . . . . 9.4.3.2 VFR aircraft . . . . . . . . . . . . . . . . 9.4.3.1 Bushfire reporting procedure . . . . . . . . . . . . 4.5.2 C Calculating longitudinal time separation . . . . . . . 10.3.3.1 separation same traffic direction . . . . . . . .10.3.20.1 time of passing . . . . . . . . . . . . .10.3.20.2 Callsigns Air Force . . . . . . . . . . . . . . . . . . . . . 6.2.2.1 aircraft . . . . . . . . . . . . . . . . . . . . . . . . 6.2.1 army . . . . . . . . . . . . . . . . . . . . . . . . 6.2.2.2 ATS units . . . . . . . . . . . . . . . . . . . . . . . 6.2.3 confusion . . . . . . . . . . . . . . . . . . . . . 6.2.1.1 ICAO, operating agencies . . . . . . . . . . . 6.2.1 military . . . . . . . . . . . . . . . . . . . . . . 6.2.2.1 navy . . . . . . . . . . . . . . . . . . . . . . . . 6.2.2.3 vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 6.2.4 Cancelling emergency phase . . . . . . . . . . 4.2.4.3 CAVOK . . . . . . . . . . . . . . . . . . . . . . . . . 3.1.5.4 CDN message application . . . . . . . . . . . . 7.1.6.3 Change of runway . . . . . . . . . . . . . . . . . . . 12.5.3.3 phrase . . . . . . . . . . . . . . . . . . . 6.1.4.13 process, MATS . . . . . . . . . . . . . . . . . 2.1.5.4 CHG message application . . . . . . . . . . . . 7.1.5.5 Circuit direction, selection of . . . . . . . . . . . 12.5.7.3 entry, VSA not assigned . . . . . . . . . 11.1.1.5 operations . . . . . . . . . . . . . . . . . . . . . 12.5.6 landing sequence . . . . . . . . . . . 12.5.6.2 military stream landing circuit . . 12.5.7.2 patterns high volume VFR aerodrome . . . 12.5.7.4 standard . . . . . . . . . . . . . . . . . . . 12.5.7 Civil airspace changes . . . . . . . . . . . . . . . 2.4.2.4 Class A airspace . . . . . . . . . . . . . . . . . . . . 2.4.1 Class D clearances abbreviated . . . . . . . . . . . . . . . . . . . . . 9.2.9 alternative . . . . . . . . . . . . . . . . . . . . 9.2.9.2 by two-way communication . . . . . . . . 9.2.9.1 Classified flights . . . . . . . . . . . . . . . . . . 6.1.4.14 Clearance aerodrome . . . . . . . . . . . . . . . . . . . . 12.1.1 line up . . . . . . . . . . . . . . . . . . . 12.3.2.4 backtrack READY . . . . . . . . . . . . . . . . . . . 12.3.2.8 REQUEST LINE UP . . . . . . . . . . . 12.3.2.8 below LSALT . . . . . . . . . . . . . . . . . . . . 9.4.2 block level, exceptions . . . . . . . . . . . . 9.4.1.5 circuit operations . . . . . . . . . . . . . . . . 12.5.6 climb to LSALT in CTA . . . . . . . . . . . 9.4.1.16 conditional . . . . . . . . . . . . . . . . . . . 12.3.2.3 content . . . . . . . . . . . . . . . . . . . . . . . 9.2.1.3 Defence aerodromes, full-stop landing 12.5.5.4 denied . . . . . . . . . . . . . . . . . . . . . . 12.5.3.5 departure, instrument/visual . . . . . . . . 11.2.2 formation broken . . . . . . . . . . . . . . . . . . . 12.5.5.3 flights . . . . . . . . . . . . . . . . . . . . 12.5.5.3 go-around . . . . . . . . . . . . . . . . . . . . 12.5.5.1 instrument approach . . . . . 11.1.1.3, 11.1.10 issue, frequency . . . . . . . . . . . 6.1.3, 6.1.3.5 level assignment . . . . . . . . . . . . . . . . . 9.4.1 line up . . . . . . . . . . . . . . . . . . . . . . 12.3.2.4 and wait . . . . . . . . . . . . . . . . . . 12.3.2.5 clearances . . . . . . . . . . . . . . . . . 12.3.2.1 runway number . . . . . . . . . . . . . 12.3.2.7 manoeuvring area . . . . . . . . . . . . . . . 12.7.1 missed approach . . . . . . . . . 12.5.4, 12.5.4.1 multiple line up clearances . . . . . . . . 12.3.2.2 not adjacent to runway threshold . . . 12.3.2.9 objectives . . . . . . . . . . . . . . . . . . . . . 9.2.1.1 parachuting . . . . . . . . . . . . . . . . . . . . . 5.2.1 route, different . . . . . . . . . . . . . . . . 10.3.4.5 separation . . . . . . . . . . . . . . . . . . . . . 9.2.1.2 STAR . . . . . . . . . . . . . . . . . . . . . . . . . 9.2.8 terrain, vectoring . . . . . . . . . . . . . . . . 9.7.11 undercarriage status . . . . . . . . . . . . 12.5.5.1 Clearance, airways . . . . . . . . . . . . . . . . . . . 9.2.2 amended airways . . . . . . . . . . . . . . . 9.2.2.4 flight planned route . . . . . . . . . . . . . . 9.2.2.3 limits . . . . . . . . . . . . . . . . . . . . . . . . 9.2.2.9 readback requirements . . . . . . . . . . . 9.2.2.13 RNAV tracking . . . . . . . . . . . . . . . . . . 9.2.2.7 VFR at night . . . . . . . . . . . . . . . . . . . 9.2.2.6 volcanic ash . . . . . . . . . . . . . . . . . . 9.2.2.14 Clearance, helicopter circuit patterns . . . . . . . . . . . . . . . . 12.6.1.6 relocations . . . . . . . . . . . . . . . . . . . 12.6.1.3 rotor wash effect . . . . . . . . . . . . . . . 12.6.1.1 single pilot . . . . . . . . . . . . . . . . . . . 12.6.1.8 P 12 Effective: 19 March 2026 to 08 July 2026 MATS Version 75.1 22 Index tailwind limits . . . . . . . . . . . . . . . . . 12.6.1.4 take-off and taxiing . . . . . . . . . . . . . . . . 12.6.1.2 or landing . . . . . . . . . . . . . . . . . 12.6.1.5 Clearance, landing . . . . . . . . . . . . . . . . . 12.5.3.1 aerodrome . . . . . . . . . . . . . . . . . . . . 12.5.3 area occupied or obstructed . . . . . . . 12.5.3.2 cancelling . . . . . . . . . . . . . . . . . . . . 12.5.3.5 military formation . . . . . . . . . . . . . . 12.5.5.2 multiple runways . . . . . . . . . . . . . . . 12.5.3.6 not in sight . . . . . . . . . . . . . . . . . . . 12.5.3.4 undercarriage status . . . . . . . . . . . . 12.5.5.1 Clearance, predeparture SPECIAL VFR . . . . . . . . . . . . . . . . . . . . 9.2.7 VFR-on-top . . . . . . . . . . . . . . . . . . . . . 9.2.5 Clearance, take-off . . . . . . . . . . . . . . . 12.3.2.11 cancel . . . . . . . . . . . . . . . . . . . . . . 12.3.2.16 immediate . . . . . . . . . . . . . . . . . . . 12.3.2.15 initial turn . . . . . . . . . . . . . . . . . . . 12.3.2.13 take-off phraseology . . . . . . . . . . . 12.3.2.12 Clearances . . . . . . . . . . . . . . . . . . . . . . 11.1.1.3 abbreviated, class D aerodromes . . . . . . 9.2.9 Climb non-continuous . . . . . . . . . . . . . . . . 9.4.1.13 specifying rates of . . . . . . . . . . . . . . 10.5.2.2 step . . . . . . . . . . . . . . . . . . 10.5.2, 10.5.2.4 unrestricted to, LSALT in CTA . . . . . . 9.4.1.16 Climb, cruise and descent on the same track distance separation . . . . . . . . . . . . . 10.3.14 time separation . . . . . . . . . . . . . . . . 10.3.13 Cloud break procedure . . . . . . . . . . . . . . . 11.1.4 application . . . . . . . . . . . . . . . . . . . 11.1.4.3 military aircraft . . . . . . . . . . . . . . . . . 11.1.4 restrictions . . . . . . . . . . . . . . . . . 11.1.4.2.1 CNL messages . . . . . . . . . . . . . . . . . . . . . 7.1.5.6 COMC role . . . . . . . . . . . . . . . . . . . . . . 7.1.11.6 Communication and navigation capability . . . . . . . . . 10.3.2.2 CPDLC . . . . . . . . . . . . . . . . . . . . . . . 6.1.1.1 frequency change instructions . . . . . . . . 6.1.3 preferred means . . . . . . . . . . . . . . . . 6.1.1.1 Communication, radio frequency airspace boundaries . . . . . . . . . . . . . . . . . 6.1.3.1 change frequency . . . . . . . . . . . . . . . 6.1.3.3 departure frequency . . . . . . . . . . . . . . 6.1.3.4 issue clearances . . . . . . . . . . . . . . . . 6.1.3.5 Conditional clearance . . . . . . . . . . . . . . . 12.3.2.3 Conflict area, determining . . . . . . . . . . . 10.4.4.1 Control arriving aircraft . . . . . . . . . . . . . . . . . 12.5.1 departing aircraft . . . . . . . . . . 11.2.3, 12.4.1 zones and areas, releasing . . . . . . . . . 2.4.5.4 Coordination acknowledgement, fixed service channel voice . . . . . . . . . . . . . . . . . . . 6.3.3 ADS-C, emergency . . . . . . . . . . . . . . . 6.3.2.2 aircraft . . . . . . . . . . . . . . . . . . . . . . . 6.3.1.3 all ATS units to all ATS units . . . . . . . . .6.3.4 approach to tower . . . . . . 6.3.4.10, 6.3.4.11 assigned level . . . . . . . . . . . . . . . . . . 6.3.2.6 ATS to ATS . . . . . . . . . . . . . . . . . . . . 6.3.4.2 ATS unit providing Class G airspace services . . . . . . . . . . . . . . . 6.3.4.17 to ATC unit . . . . . . . . . . . . . . . 6.3.4.15.1 back . . . . . . . . . . . . . . . . . . . . . . . 6.3.4.12 boundary . . . . . . . . . . . . . . . . . . . . 6.3.4.14 changes . . . . . . . . . . . . . . . . . . . . . . 6.3.1.5 En route Control (surveillance or procedural) . . . . . 6.3.4.6 to en route control . . . . . . . . . . . 6.3.4.3 to or from (procedural) . . . . . . . . 6.3.4.4 formation or in-company flights . . . . 6.3.2.12 hand-off/acceptance . . . . . . . . . . . . . . .9.7.7 phraseology . . . . . . . . . . . . . . . . . . . . .6.3.5 principles . . . . . . . . . . . . . . . . . . . . . . .6.3.1 readbacks, requirements . . . . . . . . . . 6.3.3.2 receiving operator, acknowledgement . 6.3.3.4 requirements . . . . . . . . . . . . . . . . . . 6.3.4.1 standard . . . . . . . . . . . . . . . . . . . . . 6.3.1.2 transfer, identification . . . . . . . . . . . . . .9.7.6 Coordination messages ACP . . . . . . . . . . . . . . . . . . . . . . . . . 7.1.6.4 CDN . . . . . . . . . . . . . . . . . . . . . . . . 7.1.6.3 CPL . . . . . . . . . . . . . . . . . . . . . . . . . . .7.1.6 EST . . . . . . . . . . . . . . . . . . . . . . . . . 7.1.6.2 LAM . . . . . . . . . . . . . . . . . . . . . . . . . 7.1.6.5 Co-sited DME beacons and waypoints . . . 10.3.4.6 longitudinal distance separation . . . . 10.3.4.3 Covert operations . . . . . . . . . . . . . . . . . 6.1.4.14 CPDLC communication . . . . . . . . . . . . . . . . . 6.1.1.1 emergency . . . . . . . . . . . . . . . . . . . . .4.2.19 CPL message application . . . . . . . . . . . . . . .7.1.6 Crash alarms, testing . . . . . . . . . . . . . . . . .2.7.1 Critical area protection . . . . . . . . . . . . 12.12.1.5 Crossing airspace boundaries . . . . . . . . . . . . 10.4.9.8 track - time separation . . . . . . . . . . . 10.3.19 Crossing runways . . . . . . . . . . . . . . . . 12.7.1.1.1 Crosswind limitations . . . . . . . . . . . . . . 12.2.1.3 Cruising levels . . . . . . . . . . . . . . . . . . . 9.4.1.12 conform to levels . . . . . . . . . . . . . . . 9.4.1.8 non-conforming, outside controlled airspace . . . . . . . . . . . . . . 9.4.1.11 return to standard levels . . . . . . . . . 9.4.1.9.2 CTL application . . . . . . . . . . . . . . . . . . . . . .7.1.9 message . . . . . . . . . . . . . . . . . . . . . 7.1.9.1 Customs flights . . . . . . . . . . . . . . . . . . . . . .5.1.2 D Danger areas vertical limits . . . . . . . . . . 2.4.8.11 Data link failures . . . . . . . . . . . . . . . . . . . . . . . .9.8.4 reporting and communication . . . . . . . . .9.8.1 MATS Version 75.1 Effective: 19 March 2026 to 08 July 2026 P 13 Index Data recording . . . . . . . . . . . . . . . . . . . . . . 2.5.3 Defence airspace management . . . . . . . . . . . . 2.4.2.3 ATC . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.4.7 responsibilities . . . . . . . . . . . . . . 2.4.7.2 separation . . . . . . . . . . . . . . . . . 2.4.7.3 weapons training area . . . . . . . . 2.4.8.15 operations, air, in military airspace . . . . . 2.4.7 Degraded modes, priorities . . . . . . . . . . . . . 2.3.2 Delay, advising aircraft of . . . . . . . . . . . . 9.6.1.3 DEP message . . . . . . . . . . . . . . . . . . . . . 7.1.5.7 Departing aircraft auto release . . . . . . . . . . . . . . . . . . . . 11.2.4 control independent departures . . . . . . 11.2.3.2 instruction, departures . . . . . . . 11.2.3.1 NEXT call . . . . . . . . . . . . . . . . . . . 11.2.3 instructions . . . . . . . . . . . . . . . . . . . . 11.2.1 time separation . . . . . . . . . . . . . . . . 10.3.10 vectoring departure heading . . . . . . . . . . 11.2.1.1 instructions to pilot . . . . . . . . . . 11.2.1.5 Departure separation conditions application . . . . . . . . . . . . . . . . . . . 10.3.9.1 Departure standards 1 to 7 . . . . . . . . . . . . . . . . . . . . . . 10.3.9.3 2A to 7A . . . . . . . . . . . . . . . . . . . . 10.3.9.4 DEP 1 - 1 min . . . . . . . . . . . . . . . . .10.3.10.1 DEP 2/2A - 2/5 min . . . . . . . . . . . . .10.3.10.2 DEP 3/3A - 2/5 min . . . . . . . . . . . . .10.3.10.3 DEP 4/4A - 5/10 min . . . . . . . . . . . .10.3.10.4 DEP 5/5A - 5/10 min . . . . . . . . . . . .10.3.10.6 DEP 6/6A - 5/10 min . . . . . . . . . . . .10.3.10.7 DEP 7/7A - 10/15 min . . . . . . . . . . .10.3.10.8 DEP 8 . . . . . . . . . . . . . . . . . . . . . .10.3.11.1 general aviation VFR flights . . . . . . . 10.3.9.2 Departures control of . . . . . . . . . . . . . . . . . . . . . . 12.4.1 instruction radar SIDS or headings . . . . . . . 12.3.2.6 instrument and visual . . . . . . . . . . . . . 11.2.2 procedures . . . . . . . . . . . . . . . 11.2.3, 12.4.1 track monitoring . . . . . . . . . . . . . . . 11.1.9.6 Departures, instrument/visual clearance . . . . . . . . . . . . . . . . . . . . . . 11.2.2 SID /route name cancelled . . . . . . . .12.3.2.14 tracking instructions . . . . . . . . . . . . 11.2.2.9 visual, in lieu of SID . . . . . . . . . . . . 11.2.2.8 Dependent parallel approaches . . . . . . . . . 11.1.6 Descent non-continuous . . . . . . . . . . . . . . . 9.4.1.13 specifying rates of . . . . . . . . . . . . . 10.5.2.2 step . . . . . . . . . . . . . . . . . . 10.5.2, 10.5.2.5 Determining aircraft position . . . . . . . . . . . . . . . . . 10.4.3 area of conflict . . . . . . . . . . . . . . . . 10.4.4.1 BSLP . . . . . . . . . . . . . . . . . . . . . . . 10.4.4.2 Deviation towards NTZ . . . . . . . . . . . . . . 11.1.5.2 deviations after STAR issued . . . . . . . . . . 9.2.8.11 Diagrams lateral separation . . . . . . . . . . 10.4.8.1 Distance standards A1 - 50 NM, ADS-C and PBCS . . . . . 10.3.14.2 A3 - 30 NM, ADS-C and PBCS . . . . . 10.3.14.4 A4 - 30 NM, ADS-C and PBCS definite passing . . . . . . . . 10.3.18.3 Minima A2 - 50 NM, ADS-C, PBCS definite passing . . . . . . . . . . . 10.3.18.2 D1 - 20 NM . . . . . . . . . . . . . . . 10.3.14.5 D2 - 20 NM . . . . . . . . . . . . . . . 10.3.14.6 D3 - 20 NM . . . . . . . . . . . . . . . 10.3.14.7 D4a - 15 NM . . . . . . . . . . . . . . 10.3.16.1 D4b - 15 NM . . . . . . . . . . . . . . 10.3.16.2 D4c - 15 NM . . . . . . . . . . . . . . 10.3.16.3 D4d - 15 NM . . . . . . . . . . . . . . 10.3.14.8 D4e - 15 NM . . . . . . . . . . . . . . 10.3.12.1 D5 - 10 NM . . . . . . . . . . . . . . . 10.3.12.2 D6 - 5 NM . . . . . . . . . . . . . . . . 10.3.12.3 D7, proportional DME distance . 10.3.16.4 D8a - 10/12 NM, definite passing . . . . . . . . . . . 10.3.18.5 D8b - 5 NM, definite passing . . . 10.3.18.7 D8c - 10 NM, definite passing . . 10.3.18.6 R1 - 20 NM . . . . . . . . . . . . . . . 10.3.11.2 R2 - 20 NM, definite passing . . . 10.3.18.4 R3 - 30 NM . . . . . . . . . . . . . . . 10.3.14.3 R4 - 50 NM . . . . . . . . . . . . . . . 10.3.14.1 R5 - 50 NM, definite passing . . . 10.3.18.1 Distress beacon signals . . . . . . . . . . . . . . 4.2.24 DLA message application . . . . . . . . . . . . . 7.1.5.4 DME entry/exit points for navaid - navaid (independent) . . 10.4.7.4 navaid - visual . . . . . . . . . . . . . . 10.4.7.7 includes TACAN . . . . . . . . . . . . . . . . 10.3.5.1 DME/GNSS distance conditions . . . . . . . . . . . . . . 10.3.5 separation D1 to D4 . . . . . . . . . . . . . . . . . . 10.3.5.2 GNSS available . . . . . . . . . . . . . 10.3.5.5 GNSS unavailable . . . . . . . . . . . . 10.3.5.4 Due regard . . . . . . . . . . . . . . . . . . . . . . . . 5.1.9 E Electronic interference . . . . . . . . . . . . . . . 5.1.11 Emergencies absence of airport fire service . . . . . . . 4.3.2.5 AEP activation . . . . . . . . . . . . . . . . . . . 4.3.2 aircraft in distress . . . . . . . . . . . . . . . 4.4.5.3 airfield closure . . . . . . . . . . . . . . . . . . . 4.3.7 alert phase (ALERFA) . . . . . . . . . . . . . 4.2.2.2 arresting system . . . . . . . . . . . . . . . . . 4.3.3 assistance available . . . . . . . . . . . . . . 4.2.5.7 bomb warning procedure . . . . . . . . . . . . . . . . . . . 4.2.7 P 14 Effective: 19 March 2026 to 08 July 2026 MATS Version 75.1 22 Index vague . . . . . . . . . . . . . . . . . . . . . 4.2.7.5 bombs, hung . . . . . . . . . . . . . . . . . . . 4.2.16 cancellations . . . . . . . . . . . . . . . . . . . . 4.2.4 communication assistance . . . . . . . . . . . . . . . . . 4.2.9.12 checks . . . . . . . . . . . . . . . . . . . . 4.2.3.4 failure . . . . . . . . . . . . . . . . . . . . . . 4.2.9 priority . . . . . . . . . . . . . . . . . . . 4.2.5.11 controller actions . . . . . . . . . . . . . . . . 4.2.6.1 crash alarm . . . . . . . . . . . . . . . . . . . . . 4.3.2 directing aircraft to assist . . . . . . . . . . 4.2.5.8 distress phase (DETRESFA) . . . . . . . . . . . . 4.2.2.3 state actions . . . . . . . . . . . . . . . . 4.2.5.9 emergency levels . . . . . . . . . . . . . . 4.3.1.2.1 escort, forced landing or ditching . . . . 4.2.13 fuel dumping . . . . . . . . . . . . . . . . . . . 4.2.11 shortage . . . . . . . . . . . . . . . . . . . 4.2.10 full emergency . . . . . . . . . . . . . . . . . . 4.3.1.2 hijack procedures . . . . . . . . . . . . . . . . . . 4.2.8 IFER procedures . . . . . . . . . . . . . . . . 4.2.5.3 interception and escort . . . . . . . . . . . 4.2.13.3 landing gear observations at night . . . . . 4.3.6 level change, loss of separation . . . . . . 4.2.17 local standby . . . . . . . . . . . . . . . . . . . . 4.3.1 medical, procedure . . . . . . . . . . . . . . 4.2.15 missing aircraft . . . . . . . . . . . . . . . . . 4.4.5.2 oceanic airspace, required deviation . . 4.2.20 phases . . . . . . . . . . . . . . . . . . . . . . . . 4.2.1 reports, aircraft in distress . . . . . . . . . 4.4.5.3 SAR messages . . . . . . . . . . . . . . . . . . . 4.4.4 time sequence, phases . . . . . . . . . . . . . 4.2.3 transponder codes . . . . . . . . . . . . . . . . 4.2.6 uncertainty phase (INCERFA) . . . . . . . . 4.2.2 upgrading phases . . . . . . . . . . . . . . . . 4.2.4 urgency state actions . . . . . . . . . . . . 4.2.5.10 VFR flights in IMC . . . . . . . . . . . . . . . 4.2.14 Emergencies, in-flight acknowledge . . . . . . . . . . . . . . . . . . . 4.2.5.2 bomb warning procedure . . . . . . . . . . . 4.2.7 procedures . . . . . . . . . . . . . . . . . . . . 4.2.5.3 responding . . . . . . . . . . . . . . . . . . . . . 4.2.5 Emergency ADS-B . . . . . . . . . . . . . . . . . . . . . . . . 4.2.18 ADS-C . . . . . . . . . . . . . . . . . . . . . . . . 4.2.18 CPDLC . . . . . . . . . . . . . . . . . . . . . . . 4.2.19 functions, testing . . . . . . . . . . . . . . . . 9.7.3.5 phase ALERFA . . . . . . . . . . . . . . . . . . . . 4.2.2.2 cancelling . . . . . . . . . . . . . . . . . . 4.2.4.3 DETRESFA . . . . . . . . . . . . . . . . . . 4.2.2.3 downgrading phases . . . . . . . . . . 4.2.4.2 INCERFA . . . . . . . . . . . . . . . . . . . . 4.2.2 signals pilots reports . . . . . . . . . . . . . . . . 4.4.5.1 reports from the public, SAR action 4.4.5.4 testing SSR emergency codes . . . . . . 9.7.3.6 Emergency Autoland activation response 4.2.23.2 Emergency Autoland system . . . . . . . . . . .4.2.23 activation . . . . . . . . . . . . . . . . . . . . 4.2.23.1 EMG messages, application . . . . . . . . . . . 7.1.4.2 Enhanced Information Services . . . . . . . . . .9.7.9 Entry and exit points . . . . . . . . . 10.4.5, 10.4.10.2 establishing . . . . . . . . . . . . . . . . . . 10.4.5.1 Equipment checks . . . . . . . . . . . . . . . . . . . . . . . 2.7.1.2 crash alarms, testing . . . . . . . . . . . . . . .2.7.1 inspections, routine . . . . . . . . . . . . . . . .2.7.1 navaids monitoring . . . . . . . . . . . . . . . . . . .2.7.2 unavailable, display to tower . . . . 2.7.2.4 testing, routine . . . . . . . . . . . . . . . . . . .2.7.1 EST message application . . . . . . . . . . . . . 7.1.6.2 Establishment, classes of airspace . . . . . . . .2.4.2 F Facility specification . . . . . . . . . . . . . . 12.13.1.1 Failure to report . . . . . . . . . . . . . . . . . . 11.1.7.2 Filing messages . . . . . . . . . . . . . . . . . . . 2.5.1.8 Fireworks . . . . . . . . . . . . . . . . . . . . . . . . .5.1.13 FIS broadcast . . . . . . . . . . . . . . . . . . . . . 9.1.3.3 hazard alert . . . . . . . . . . . . . . . . . . . 9.1.3.4 notification . . . . . . . . . . . . . . . . . . . . . .9.1.3 Pilot access information . . . . . . . . . . . 9.1.2.3 precedence . . . . . . . . . . . . . . . . . . . 9.1.2.2 safety alerts . . . . . . . . . . . . . . . . . . . . .9.1.4 sudden change . . . . . . . . . . . . . . . . . 9.1.3.4 Flight data information to be recorded . . . . . . .1.4.1 ID management . . . . . . . . . . . . . . . . .9.7.4 military aircraft . . . . . . . . . . . . . . 9.7.4.1 inspection aircraft . . . . . . . . . . . . . . . .5.1.12 notification messages, origination . . . . . . . . . . .7.1.5 plan, changes, coordination . . . . . . . . 6.3.2.8 Flight path assessing aircraft deviation . . . . . . . 9.7.12.2 deviation . . . . . . . . . . . . . . . . . . . . 9.7.12.4 pilot advice . . . . . . . . . . . . . . . . 9.7.12.5 monitoring . . . . . . . . . . . . . . . . . . . . .9.7.12 track deviation . . . . . . . . . . . . . . . . 9.7.12.3 Flight progress data aerodrome control instructions and clearances . . . . . . . . . 12.10.1.3 recording data . . . . . . . . . . . . . . . 12.10.1.2 time . . . . . . . . . . . . . . . . . . . . . . 12.10.1 Flights, lower priority . . . . . . . . . . . . . . . 2.3.2.2 Flightwatch services . . . . . . . . . . . . . . . . 9.1.7.1 Forced landing interception . . . . . . . . . . 4.2.13.3 Form Urgent SAR Message . . . . . . . . . . . . . .13.1.1 MATS Version 75.1 Effective: 19 March 2026 to 08 July 2026 P 15 Index Formation flights breaking trail . . . . . . . . . . . . . 9.9.4, 9.9.4.2 changes . . . . . . . . . . . . . . . . . . . . .10.10.4.4 civil . . . . . . . . . . . . . . . . . . . . . . . . . 9.9.1.1 formation break . . . . . . . . . . . . . . . . . . 9.9.3 separation . . . . . . . . . . . . . . . . . . .10.10.4.3 between aircraft . . . . . 10.10.4 , 10.10.4.1 civil aircraft . . . . . . . . . . . . . . .10.10.4.5 speed control . . . . . . . . . . . . . . . . . . 9.5.1.3 split formation . . . . . . . . . . . . . . . . . 9.9.4.1 termination of in-trail . . . . . . . . . . . . . . 9.9.4 vertical separation formations . . . . .10.10.4.2 Formation flights, services in-trail . . . . . . . . . . . . . . . . . . . . . . . . . 9.9.1 instructions . . . . . . . . . . . . . . . . 9.9.1.4 loss contact . . . . . . . . . . . . . . . . . . 9.9.2 loss of trail . . . . . . . . . . . . . . . . . 9.9.1.3 lost contact . . . . . . . . . . . . . . . . 9.9.2.3 request . . . . . . . . . . . . . . . . . . . 9.9.1.2 turns . . . . . . . . . . . . . . . . . . . . . 9.9.1.5 Formation or in-company flights coordination . . . . . . . . . . . . . . . . . . . . 6.3.2.12 FPL associated message updates . . . . . . . . . 7.1.5 dissemination . . . . . . . . . . . . . . . . . . 7.1.5.3 flight notification . . . . . . . . . . . . . . . . . 7.1.5 separate flight plans . . . . . . . . . . . . . 7.1.5.2 Frequency change instructions . . . . . . . . . . . . . . . . 6.1.3 issue clearances . . . . . . . . . . . . . . . . 6.1.3.5 Fuel critical, speed control . . . . . . . . . . . . 9.5.1.3 dumping . . . . . . . . . . . . . . . . . . . . . . 4.2.11 non-emergency . . . . . . . . . . . . 4.2.11.3 minimum . . . . . . . . . . . . . . . . . . . . 4.2.10.3 shortage . . . . . . . . . . . . . . . . . . . . . . 4.2.10 Full emergency declaration . . . . . . . . . . . 4.3.1.2 G General . . . . . . . . . . . . . . . . . . . . . . . . 10.3.9.2 Glide path and localiser critical areas . . .12.12.1.4 GNSS available . . . . . . . . . . . . . . . . . . . . 10.3.5.5 unavailable . . . . . . . . . . . . . . . . . . 10.3.5.4 Go-around runway . . . . . . . . . . . . . . . . . . . . . . . 12.5.4 visual approach . . . . . . . . . . . . . . . 12.5.4.2 H Hand-off . . . . . . . . . . . . . . . . . . . . . . . . 9.7.7.1 Handover/takeover procedures . . . . . . . . . . . . . . . . . . . . . . 2.6.2 responsibilities . . . . . . . . . . . . . . . . . . . 2.6.1 Hazard Alerts . . . . . . . . . . . . . . . . . . . . . 9.1.3.4 Heavy jet STAR clearance . . . . . . . . . . . . . . . . 9.2.8.8 visual approach . . . . . . . . . . . . . . .11.1.11.3 Helicopter access corridors . . . . . . . . . . . . . . . . 12.6.1.7 circuit pattern . . . . . . . . . . . . . . . . . 12.6.1.6 clearances HLS . . . . . . . . . . . . . . . . . . . . . 12.6.1.5 relocations . . . . . . . . . . . . . . . . 12.6.1.3 rotor wash effect . . . . . . . . . . . . 12.6.1.1 single pilot . . . . . . . . . . . . . . . . 12.6.1.8 tailwind limits . . . . . . . . . . . . . . 12.6.1.4 take-off and taxiing . . . . . . . . . . 12.6.1.2 High Intensity Approach (HIAL) and Runway Lighting (HIRL) Operation . . . . 12.11.1.6 Hijack procedures . . . . . . . . . . . . . . . . . . . . . 4.2.8 Holding fix . . . . . . . . . . . . . . . . . . . . . . . . . 11.1.1.8 instructions . . . . . . . . . . . . . . . . . . . . . 9.6.1 Holding pattern diagram . . . . . . . . . . . . . 10.4.11 I Identification . . . . . . . . . . . . . . . . . . . . . . . 9.7.2 advice . . . . . . . . . . . . . . . . . . . . . . . 9.7.2.3 AGSS . . . . . . . . . . . . . . . . . . . . . . . 12.9.3.4 methods . . . . . . . . . . . . . . . . . . 12.9.3.5 establish . . . . . . . . . . . . . . . . . . . . . . 9.7.2.1 maintain . . . . . . . . . . . . . . . . . . . . . . 9.7.2.2 transfer . . . . . . . . . . . . . . . . . . . . . . . 9.7.6 IFR changing procedure . . . . . . . . . . . . . 6.3.2.10 ILS flight check . . . . . . . . . . . . . . . . . . . . 2.7.2.5 ILS protection of critical and sensitive areas . . . . . . . . . . . . . . . . . . . . . . . . . . 12.12.1 IMA distribution electronic edition . . . . . . . . . . . . . 2.1.7.8 print edition . . . . . . . . . . . . . . . . 2.1.7.7 initiating . . . . . . . . . . . . . . . . . . . . . . 2.1.7.4 issuing . . . . . . . . . . . . . . . . . . . . . . . 2.1.7.6 responsibility . . . . . . . . . . . . . . . . . 2.1.7 power . . . . . . . . . . . . . . . . . . . . . . . . 2.1.7.3 raising . . . . . . . . . . . . . . . . . . . . . . . 2.1.7.5 INCERFA, declare ADS-B or ADS-C . . . . . . 4.2.18 In-company flights . . . . . . . . . . . . . . . . . . . . . . . 10.10.5 separation between airborne aircraft . . . . . . . . . . . . 10.10.5.1 or formation flights coordination . . . . . . . . . . . . 6.3.2.12 Independent parallel approaches . . . . . . . . . . . . . . . . . . . . 11.1.5 visual approaches 11.1.7.1 , 11.1.7.2 , 11.1.7.3 VSA phraseology at night . . . . . . . . . 11.1.7.4 In-flight emergencies, responding . . . . . . . . 4.2.5 Instructions, taxi guidance . . . . . . . . . . . 12.9.3.3 Instrument approach clearances . . . . . . . 11.1.1.3 Instrument approach procedures descent clearance, IMC . . . . . . . . . . 11.1.10 DME/GPS arrival direct . . . . . . . . . . . . . . 11.1.10.5 procedure . . . . . . . . . . . . . . . . 11.1.10.3 P 16 Effective: 19 March 2026 to 08 July 2026 MATS Version 75.1 22 Index GPS in lieu of DME, use . . . . . . . . . 11.1.10.6 level occupancy . . . . . . . . . . . . . . . 11.1.10.4 unrestricted descent . . . . . . . . . . . . 11.1.10.7 Interception . . . . . . . . . . . . . . . . . . . . . 4.2.12.3 Interference electronic . . . . . . . . . . . . . . . . . . . . . 5.1.11 suspected . . . . . . . . . . . . . . . . . . . . 5.1.11.1 International flight plan form . . . . . . . . . . . . . . . . . 7.1.10 L LAHSO active participation, availability . . . . . 10.9.5.3 aircraft classification . . . . . . . . . . . . . 10.9.5.2 applying . . . . . . . . . . . . . . . . . . . . 10.9.5.10 conditions . . . . . . . . . . . . . . . . . . . . 10.9.5.9 crossing of runway at non-operational end . . . . . . . . . . . . . . . . . 10.9.5.13 exemptions . . . . . . . . . . . . . . . . . . . 10.9.5.5 hold short no longer applicable . . . . 10.9.5.12 ineligibility . . . . . . . . . . . . . . . . . . . . 10.9.5.8 landing distance . . . . . . . . . . . . . . . . 10.9.6 LDR . . . . . . . . . . . . . . . . . . . . . . . . 10.9.6.1 LoA . . . . . . . . . . . . . . . . . . . . . . . . 10.9.7.1 foreign military . . . . . . . . . . . . . . 10.9.7 participation . . . . . . . . . . . . . . . . . . 10.9.5.6 passive participation, availability . . . . 10.9.5.4 pilot report hold short . . . . . . . . . . . 10.9.5.11 requirements . . . . . . . . . . . . . . . 10.9.5.7 when applied . . . . . . . . . . . . . . . . . . . 10.9.5 LAM message application . . . . . . . . . . . . . 7.1.6.5 Landing area occupied or obstructed . . . . . . . 12.5.3.2 clearance . . . . . . . . . . . . . . . . . . . . 12.5.3.1 gear observations at night . . . . . . . . . . 4.3.6 military, full-stop . . . . . . . . . . . . . . . 12.5.5.4 report . . . . . . . . . . . . . . . . . . . . . . . . 3.1.5.4 sequence . . . . . . . . . . . . . . . . . . . . 12.5.6.2 Lateral limit parachutist operations . . . . . . 5.2.2.1 Lateral separation . . . . . . . . . . . . . . . . . . 10.4.2 does not exist . . . . . . . . . . . . . . . . . 10.4.5.5 exists . . . . . . . . . . . . . . 10.4.5.4.1, 10.9.2.1 tables . . . . . . . . . . . . . . . . . . . . . . . . 10.4.7 SCNS dependent . . . . . . . . . . . 10.4.7.12 using area navigation . . . . . . . . . . . . . 10.4.5.6 DME . . . . . . . . . . . . . . . . . . . . . 10.4.5.7 time . . . . . . . . . . . . . . . . . . . . . 10.4.5.4 visual observation departures . . . 10.4.5.2 Legislation, noise abatement . . . . . . . . . 12.2.1.3 Level assignment . . . . . . . . . . . . . . . . . . . . 9.4.1 LSALT . . . . . . . . . . . . . . . . . . . . . . . . . 9.4.2 restrictions . . . . . . . . . . . . . . . . . . . . . 9.4.4 Level requirements based on distance . 10.4.5.5.1 Levels, emergency . . . . . . . . . . . . . . . . 4.3.1.2.1 Light signals . . . . . . . . . . . . . . . . . . . . . 12.7.3.1 Lighting aerodrome . . . . . . . . . . . . . . . . . . 12.11.1.1 HIRL . . . . . . . . . . . . . . . . . . . . . . 12.11.1.6 observation, procedures . . . . . . . . . . 12.11.3 partial failure . . . . . . . . . . . . . . . . 12.11.3.2 portable requirements . . . . . . . . . . . . . 12.11.2.2 responsibility . . . . . . . . . . . . . . . 12.11.2 runway . . . . . . . . . . . . . . . . . . . . 12.11.1.2 unlit/masked, military . . . . . . . . . . . . . .5.1.4 Line up clearances . . . . . . . . . . . . . . . . . . . 12.3.2.1 multiple clearances . . . . . . . . . . . . . 12.3.2.2 Local standby declaration . . . . . . . . . . . . . .4.3.1 Localiser or GBAS failure . . . . . . . . . . . . 11.1.9.3 Longitudinal distance separation general conditions . . . . . . . . . . . . . . . . . . . . . . . .10.3.4 Longitudinal separation application . . . . . . . . . . . . . . . . . . . 10.3.2.1 overall conditions . . . . . . . . . . . . . . . .10.3.2 same or reciprocal track . . . . . . . . . 10.3.2.1 time standards . . . . . . . . . . . . . . . . 10.3.3.1 Longitudinal time separation calculating . . . . . . . . . . . . . . . . . . . 10.3.3.1 conditions . . . . . . . . . . . . . . . . . . . . .10.3.3 reducing or increasing to the minimum . . . . . . . . . . 10.3.20.1 same traffic direction, calculating . . 10.3.20.1 Longitudinal time standards . . . . . . . . . . 10.3.3.1 Low visibility operations aerodrome manoeuvring area . . 12.8.3.2 Defence aerodromes . . . . . . . . . 12.8.3.1 procedures implementing . . . . . . . . . . . . . . 12.8.1.2 initiating . . . . . . . . . . . . . . . . . . 12.8.1.1 notification . . . . . . . . . . . . . . . . 12.8.1.3 RV . . . . . . . . . . . . . . . . . . . . . . . .12.8.2 RVR . . . . . . . . . . . . . . . . . . . . . . .12.8.2 LSALT levels below . . . . . . . . . . . . . . . . . . .9.4.2 M Mach number technique . . . . . . . . . . . . 10.3.3.2 Maintaining . . . . . . . . . . . . . . . . . . . . . . . .8.3.1 Manoeuvring area clearance delivery . . . . . . . . . . . . . . . .12.3.1 push-back approvals . . . . . . . . . . . . 12.3.1.3 taxi and pre-taxi instructions . . . . . . . .12.3.1 taxi instructions provision . . . . . . . . 12.3.1.5 Manual calculation tables - longitudinal separation . . . . . . . . . . . . . . 10.3.20 plotting examples - diagrams . . . . . . . 10.4.10 Maritime surveillance, military . . . . . . . . . . .5.1.6 MARSA, purpose . . . . . . . . . . . . . . . . . . . . .5.1.8 MATS book version numbers . . . . . . . . . . . . 2.1.5.2 frequency of amendments . . . . . . . . . 2.1.5.1 IMA . . . . . . . . . . . . . . . . . . . . . . . . . . .2.1.7 MATS Version 75.1 Effective: 19 March 2026 to 08 July 2026 P 17 Index Supps . . . . . . . . . . . . . . . . . . . . . . . 2.1.1.4 Measurement, units of . . . . . . . . . . . . . . 1.3.1.2 Measuring aircraft on same identical tracks . . . . . . . . . 10.3.7.5 with a bend in track . . . . . . . . . . . . 10.3.7.6 Medical emergencies . . . . . . . . . . . . . . . . . 4.2.15 Messages filing . . . . . . . . . . . . . . . . . . . . . . . . 2.5.1.8 retaining . . . . . . . . . . . . . . . . . . . . . 2.5.1.8 MET systems . . . . . . . . . . . . . . . . . . . . . 3.1.5.5 Meteorology balloon release . . . . . . . . . . . . . . . . . . . 5.1.1 unforecast conditions . . . . . . . . . . . . 3.2.1.1 weather observations . . . . . . . . . . . . 3.1.5.2 Military air defence operations, airspace . . . . . . . 2.4.7 air-to-air refuelling . . . . . . . . . . . . . . . 5.1.10 callsigns . . . . . . . . . . . . . . . . . . . . . 6.2.2.1 cloud break procedure . . . . . . . . . . . . 11.1.4 formation flights, landing . . . . . . . . . 12.5.5.2 lighting, unlit/masked . . . . . . . . . . . . . . 5.1.4 maritime surveillance . . . . . . . . . . . . . . 5.1.6 MARSA . . . . . . . . . . . . . . . . . . . . . . . . 5.1.8 NOCOM flights . . . . . . . . . . . . . . . . . . . 5.1.5 pressure settings, airspace . . . . . . . . . . 9.3.4 special requirements flight . . . . . . . . . . . 5.1.7 traffic information . . . . . . . . . . . . . . . 9.1.5.5 weapons training area . . . . . . . . . . . 2.4.8.15 MILSPECREQ . . . . . . . . . . . . . . . . . . . . . . . 5.1.7 Minima T1c - 5 min . . . . . . . . . . . . . . . .10.3.10.5 Minimum assignable level, procedure . . . . 9.4.1.2 Missed approach clearance . . . . . . . . . . . . 12.5.4 Mix of distances . . . . . . . . . . . . . . . . . . 10.3.4.6 Model aircraft . . . . . . . . . . . . . . . . . . . . . . 5.1.14 MSA procedure . . . . . . . . . . . . . . . . . . . . 9.4.1.2 N Navaid, single, outbound from . . . . . . . . 10.4.9.1 Navaids generic tolerances . . . . . . . . . . . . . 10.4.7.2 monitoring . . . . . . . . . . . . . . . . . . . . . . 2.7.2 short range tolerances . . . . . . . . . . 10.4.7.3 tolerances, navaid behind /navaid ahead . . . . . . . . . . 10.4.9.4 visual tracking and position fixing tolerances . . . . . . . . . . . . . 10.4.7.6 Navigational tolerances slant range correction, NMs . . . . . . . . . . . . . . . . . . 10.4.5.9 NOCOM flights . . . . . . . . . . . . . . . . . . . . . . 5.1.5 Non-continuous climb or descent . . . . . . 9.4.1.13 NOTAM content Navaid . . . . . . . . . . . . . . 2.7.2.2 Notification, missing aircraft . . . . . . . . . . 4.4.5.2 NTZ deviation . . . . . . . . . . . . . . . . . . . . 11.1.5.2 penetrating . . . . . . . . . . . . . . . . . . 11.1.5.3 O Oceanic airspace required deviation . . . . . 4.2.20 One aircraft maintains while other changes level distance separation . . . . . . . . . . . . . 10.3.16 time separation . . . . . . . . . . . . . . . . 10.3.15 Opening/closing non-continuous units . . . . 2.6.2.1 Operation outside criteria . . . . . . . . . . . . 10.3.6.2 Operational requirements, conflicting priority 2.3.2 Operations journals . . . . . . . . . . . . . . . . . . 2.5.2 Opposite direction climb/descent distance separation . . . . . . . . . . . . . 10.3.18 time separation . . . . . . . . . . . . . . . . 10.3.17 Other messages . . . . . . . . . . . . . . . . . . . . 7.1.9 Outbound from a single navaid . . . . . . . . 10.4.9.1 Overshoot/undershoot . . . . . . . . . . . . . . 10.4.9.2 P Parachuting . . . . . . . . . . . . . . . . . . . . . . . 5.2.1 separation . . . . . . . . . . . . . . . . . . . . . . 5.2.2 traffic information . . . . . . . . . . . . . . . 5.2.1.5 Parallel approaches dependent . . . . . . . . . . . . . . . . . . . . 11.1.6 independent . . . . . . . . . . . . . . . . . . . 11.1.5 Parallel operations . . . . . . . . . . . . . . . . . . 11.1.8 types . . . . . . . . . . . . . . . . . . . . . . . 11.1.8.1 Penetrating NTZ - break-out procedure . . 11.1.5.3 Performance-based communication and surveillance (PBCS) conditions . . . . . . . . . 10.3.8 Phraseology flight planned route . . . . . . . . . . . . . . 9.2.2.3 transfer of identification . . . . . . . . . . . . 9.7.6 voice coordination . . . . . . . . . . . . . . . 6.3.5.2 Pilot notification of runway unsuitable . . . 12.2.1.5 PJE aircraft not entering Restricted Area . . 5.2.2.5 POLAIR RED . . . . . . . . . . . . . . . . . . . . . . . 5.1.3 Police operations . . . . . . . . . . . . . . . . . . . . 5.1.3 Position information . . . . . . . . . . . . . . . . . . . . 9.1.6.5 reports acknowledgement . . . . . . . . . . . . 6.3.3.3 boundary positions . . . . . . . . . . . . 6.3.2.5 Pressure altitude-derived information level occupancy . . . . . . . . . . . . . . . . . 9.7.5.2 level verification . . . . . . . . . . . . . . . . 9.7.5.3 comparison . . . . . . . . . . . . . . . . . 9.7.5.4 tolerance . . . . . . . . . . . . . . . . . . . . . 9.7.5.5 Pressure settings military airspace . . . . . . . . 9.3.4 Priority conflicting operation requirements . . . . . 2.3.2 degraded modes . . . . . . . . . . . . . . . . . 2.3.2 duty . . . . . . . . . . . . . . . . . . . . . . . . . 2.2.1.5 FIS . . . . . . . . . . . . . . . . . . . . . . . . . . 9.1.2.2 flights, lower priority . . . . . . . . . . . . . 2.3.2.2 general . . . . . . . . . . . . . . . . . . . . . . . . 2.3.1 level assignment . . . . . . . . . . . . . . . . 9.4.1.7 safety . . . . . . . . . . . . . . . . . . . . . . . . 2.2.1.5 P 18 Effective: 19 March 2026 to 08 July 2026 MATS Version 75.1 22 Index Providing . . . . . . . . . . . . . . . . . . . . . . . . . 9.9.1 Provision of service maps . . . . . . . . . . . . 12.1.1.5 Q QNH area . . . . . . . . . . . . . . . . . . . . . . . . . . 9.3.3 local . . . . . . . . . . . . . . . . . . . . . . . . . . 9.3.2 variations . . . . . . . . . . . . . . . . . . . . . 9.3.1.2 R Radar SSR code management . . . . . . . . . . . 9.7.3 Radio signals . . . . . . . . . . . . . . . . . . . . . 12.7.3.1 Readback clearance . . . . . . . . . . . . . . . . 9.2.2.13 Recording voice, automatic facility . . . . . . . . . . . 2.5.3.2 Records isolate recordings for incidents . . . . . . 2.5.3.3 legible entries . . . . . . . . . . . . . . . . . . 2.5.1.2 operations journals, maintaining . . . . . . 2.5.2 playback responsibility . . . . . . . . . . . . . 2.5.4 POB . . . . . . . . . . . . . . . . . . . . . . . 2.5.1.6.1 prohibited . . . . . . . . . . . . . . . . . . . . . 2.5.1.5 retention . . . . . . . . . . . . . . . . . . . . . . . 2.5.5 use of ATS recorded information . . . . . . 2.5.4 verbal information . . . . . . . . . . . . . . . 2.5.1.6 voice and data recording . . . . . . . . . . . 2.5.3 Reporting bushfires . . . . . . . . . . . . . . . . . . . . . . . 4.5.2 malicious radio transmissions . . . . . . . 4.5.2.3 marine incidents . . . . . . . . . . . . . . . . 4.5.2.2 miscellaneous reports . . . . . . . . . . . . . . 4.5.2 Requisition civil aircraft . . . . . . . . . . . . . . . . . . . . . 4.1.2 Responsibility radar hand-off acceptance . . . . . . . . . 6.1.2.6 Restricted areas, deviation . . . . . . . . . . . 4.2.21.1 RNAV tracking clearance . . . . . . . . . . . . . . . 9.2.2.7 RNP AR APCH approach terrain clearance . . . . . . . 11.1.10.2 Rounding calculations . . . . . . . . . . . . . 10.4.10.1 RPAS approvals . . . . . . . . . . . . . . . . . . . . . . 5.3.1 segregation . . . . . . . . . . . . . . . . . . . . . 5.3.4 segregation methods . . . . . . . . . . . 5.3.4.1.1 separation . . . . . . . . . . . . . . . . . . . . . . 5.3.3 surveillance . . . . . . . . . . . . . . . . . . . . . 5.3.2 unauthorised . . . . . . . . . . . . . . . . . . 4.2.22.2 RQP exception . . . . . . . . . . . . . . . . . . . . . 7.1.8.4 message application . . . . . . . . . 7.1.8, 7.1.8.3 Runway change . . . . . . . . . . . . . . . . . . . . . . 12.5.3.3 contaminated . . . . . . . . . . . . . . . . . 12.2.3.2 CROSS runway . . . . . . . . . . . . . . . 12.3.1.13 go-around . . . . . . . . . . . . . . . . . . . . . 12.5.4 jurisdiction . . . . . . . . . . . . . . . . . . . 12.7.1.3 lighting . . . . . . . . . . . . . . . . . . . . . 12.11.1.2 occupied . . . . . . . . . . . . . . . . . . . . 12.3.2.4 pilot notification of runway unsuitable 12.2.1.5 reciprocal operations approval . . . . . . . . . . . . . . . . . . 12.5.2.2 auto-release . . . . . . . . . . . . . . . 12.5.2.3 tracking arrangements . . . . . . . . . .12.5.2 traffic information . . . . . . . . . . . 12.5.2.4 resumption, acknowledgement . . . . . 12.7.1.4 separation . . . . . . . . . . . . . . . . . . 10.10.5.2 suitability . . . . . . . . . . . . . . . . . . . . 12.2.1.4 surface conditions . . . . . . . . . . . . . . 12.2.3.1 track cancel procedural SID . . . . . . . . 11.2.1.3 radar SID . . . . . . . . . . . . . . . . . 11.2.1.2 Runway End Safety Area (RESA) . . . . . . 12.7.1.5 Runways change independent visual approach 11.1.7.3 multiple, in use . . . . . . . . . . . . . . . . 12.5.3.6 nomination of . . . . . . . . . . . . . . . . . . .12.2.1 factors . . . . . . . . . . . . . . . . . . . 12.2.1.2 selection . . . . . . . . . . . . . . . . . . . . . .12.2.1 factors . . . . . . . . . . . . . . . . . . . 12.2.1.2 SODPROPS . . . . . . . . . . . . . . . . . . . . .11.1.9 RV advice to pilots . . . . . . . . . . . . . . . . 12.8.2.1 ATIS revision . . . . . . . . . . . . . . . . . 12.8.2.2 information not available . . . . . . . . . 12.8.2.8 low visibility procedures . . . . . . . . . . . .12.8.2 pilot notification, RV not assessed . . 12.8.2.7 RVR . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.8.2.7 advice to pilots . . . . . . . . . . . . . . . . 12.8.2.1 assessment, instruments or observations . . . . . . . . . . . 12.8.3.2 ATIS revision . . . . . . . . . . . . . . . . . 12.8.2.2 averaging . . . . . . . . . . . . . . . . . . . . 12.8.2.5 information not available . . . . . . . . . 12.8.2.8 instrumented . . . . . . . . . . . . . . . . . 12.8.2.4 pilot update . . . . . . . . . . . . . . . 12.8.2.3 less than 1500 m . . . . . . . . . . . . . . 12.8.3.1 low visibility operations, Defence . . . . . . . . . 12.8.3.1 procedures . . . . . . . . . . . . . . . . . .12.8.2 pilot notification, RVR not assessed . 12.8.2.7 reporting scale . . . . . . . . . . . . . . . . 12.8.2.6 separation on taxiways . . . . . . . . . . 12.8.1.5 RVSM not applicable . . . . . . . . . . . . . . . . . 9.4.1.10 transitioning into or out of the RVSM band . . . . . . . . . . . . 10.5.2.1 S S2 - 5 NM . . . . . . . . . . . . . . . . . . . . . . 10.2.2.3 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . 2.3.1.1 SAR acceptance, military . . . . . . . . . . . . . 4.4.6.2 alerting ATS responsibilities . . . . . . . . . . . 4.4.1.2 area of responsibility . . . . . . . . . . . . . 4.4.2.1 MATS Version 75.1 Effective: 19 March 2026 to 08 July 2026 P 19 Index handover military . . . . . . . . . . . . . . . . . . . 4.4.6.2 of responsibility to JRCC Australia . . . 4.4.6 messages . . . . . . . . . . . . . . . . . . . . . . 4.4.4 radio communication failure messages 4.4.4.4 recorded information, use for . . . . . . 2.5.4.2 response areas . . . . . . . . . . . . . . . . . . . 4.4.2 services provided, agencies . . . . . . . . . . 4.4.3 SARTIME management alerting . . . . . . . . . . . . . . . . . . . . . . 8.3.1.2 CENSAR . . . . . . . . . . . . . . . . . . . . . . 8.3.1.1 change or cancellation . . . . . . . . . . . 8.3.1.3 communication checks . . . . . . . . . . . 8.3.1.2 Scheduled position reporting . . . . . . . . . . 9.8.1.1 SCNS dependent lateral separation table 10.4.7.12 Segregated parallel operations . . . . . . . . . . 11.1.8 types . . . . . . . . . . . . . . . . . . . . . . . 11.1.8.1 Separation ADS-C failure . . . . . . . . . . . . . . . . . . 9.8.4.8 airspace boundary divides two sectors 10.2.2.1 application . . . . . . . . . . . . . . . . . . . 10.2.1.1 expedition . . . . . . . . . . . . . . . . . . 10.1.3 ATS surveillance system . . . . . . . . . 10.2.1.3 application . . . . . . . . . . . . . . . . 10.2.1.3 on same final approach . . . . . . . 10.2.2.1 between airborne aircraft . . . . . . . .10.10.5.1 communication failure en route . . . . . 4.2.9.3 cross check . . . . . . . . . . . . . . . . . . 10.3.2.5 emergency level change . . . . . . . . . . . 4.2.17 IFR flights conducting VFR procedures 10.1.5.5 inside/outside coverage . . . . . . . . . . 10.2.1.9 lateral - RNP approach . . . . . . . . . . 10.4.7.3 MARSA . . . . . . . . . . . . . . . . . . . . . . . . 5.1.8 method operational advantage . . . . . . . . 10.1.3.2 radio Navaids for VFR . . . . . . . . 10.1.3.3 parachuting . . . . . . . . . . . . . . . . . . . . . 5.2.2 responsibilities . . . . . . . . . . . 10.1.1, 10.1.5.2 runway . . . . . . . . . . . . . . . . . . . . .10.10.5.2 transfer of responsibility . . . . . . . . . . . 10.1.5 resume responsibility . . . . . . . . 10.1.5.4 transit traffic and air defence activity . 2.4.7.3 vertical rates of climb or descent . . . . . . 10.5.2.2 step climb . . . . . . . . . . . . . . . . 10.5.2.4 step climb and descent . . . . . . . . . 10.5.2 step descent . . . . . . . . . . . . . . 10.5.2.5 Separation requirements ATC responsibilities . . . . . . . . . . . . . 10.1.5.4 pilot responsibilities . . . . . . . . . . . . . . 10.1.5 IFR conducting VFR procedures . 10.1.5.5 Separation standard conditions . . . . . . . . . 10.3.1 application . . . . . . . . . . . . . . . . . . . 10.3.1.1 Separation standards ATS surveillance system . . . . . . . . . 10.2.1.7 control . . . . . . . . . . . . . . . . . . . 10.2.1.8 inside/outside coverage . . . . . . . 10.2.1.9 checking the distance . . . . . . . . . . . 10.3.4.8 closing speed . . . . . . . . . . . . . . . . . 10.3.4.9 distance requests . . . . . . . . . . . . . . . 10.3.4.7 distance-based longitudinal separation, DCPC exists . . . . 10.3.4.1 emergency separation . . . . . . . . . . . . 10.1.6 lateral . . . . . . . . . . . . . . . . . . . . . . . . 10.4.1 Minima T1a - 5 min . . . . . . . . . . . . . . . 10.3.13.5 T1b - 5 min . . . . . . . . . . . . . . . 10.3.15.1 T2 - 10 min . . . . . . . . . . . . . . . 10.3.13.2 T3 - 15 min . . . . . . . . . . . . . . . 10.3.13.1 T4 - 10 min . . . . . . . . . . . . . . . 10.3.13.3 T5 - 9 to 5 min . . . . . . . . . . . . 10.3.13.4 T6a, 10/15 min before TOP . . . 10.3.17.1 T6b, 10/15 min after TOP . . . . . 10.3.17.2 T7a - opposite sides of a navaid . . . . . . . 10.3.18.10 T7b - opposite sides of a visual fix . . . . . . . . . . 10.3.18.11 T7c - sight and pass . . . . . . . . . 10.3.18.8 T7d - surveillance passing . . . . . 10.3.18.9 T8a - 15 min, at the crossing point . . . . . . . 10.3.19.1 T8b - 15 min, from the crossing point . . . . . . . 10.3.19.2 off-track waypoint . . . . . . . . . . . . . . 10.3.4.4 same beacon/waypoint . . . . . . . . . . 10.3.4.2 speed confirmation . . . . . . . . . . . . . 10.1.3.4 variations to military . . . . . . . . . . . . . 10.1.2 vertical . . . . . . . . . . . . . . . . . . . . . . 10.1.6.1 reduction of . . . . . . . . . . . . . . . . 10.1.6 Separation, aerodrome adjacent class C and class D . . . . . . . 10.9.1.3 application, runway standards . . . . . . 10.9.1.1 arriving and departing aircraft . . . . . . . 10.9.2 lateral . . . . . . . . . . . . . . . . . . . . . . . 10.9.2.1 pilot confirmation . . . . . . . . . . . . . . . 10.9.1.2 take-off conditions and restrictions . . . . . 10.9.2.2 cut-off distance . . . . . . . . . . . . . 10.9.2.3 Separation, lateral approved application . . . . . . . . . . . . 10.4.2.1 area of occupancy . . . . . . . . . . . . . . 10.4.9.6 VOR or ADF . . . . . . . . . . . . . . . . 10.4.9.7 continuous navaid coverage . . . . . . . 10.4.9.3 data sources . . . . . . . . . . . . . . . . . . 10.4.1.2 diagrams . . . . . . . . . . . . . . . . . . . . 10.4.8.1 entry and exit points . . . . . . . . . . . . . 10.4.8 generic navigation tolerances (independent) . . . . . . . . . . . 10.4.7.2 navaid behind/navaid ahead . . . . . . . 10.4.9.4 offset navigation . . . . . . . . . . . . . . . 10.4.9.5 overshoot/undershoot . . . . . . . . . . . 10.4.9.2 selecting dependent or independent tolerances . . . . . . . . . . . . . 10.4.3.2 short range navaid tolerances . . . . . . 10.4.7.3 table . . . . . . . . . . . . . . . . . . . . . . . 10.4.7.12 transiting airspace tolerances . . . . . . 10.4.3.4 transitioning . . . . . . . . . . . . . . . . . . 10.4.3.5 visual tracking and position fixing P 20 Effective: 19 March 2026 to 08 July 2026 MATS Version 75.1 22 Index tolerances . . . . . . . . . . . . . 10.4.7.6 Separation, longitudinal . . . . . . . . . . . . . 10.3.2.1 time conditions . . . . . . . . . . . . . . . . . . 10.3.3 standards . . . . . . . . . . . . . . . . . 10.3.3.1 Separation, vertical ADS-C level . . . . . . . . . . . . . . . . . . . 10.5.1.3 assigning vacated levels . . . . . . . . . . 10.5.2.3 Demand Contract Request . . . . . . . . . 9.8.5.2 Separation, visual aircraft identification . . . . . . . . . . . . . 10.7.1 azimuth . . . . . . . . . . . . . . . . . . . . . 10.7.2.7 beyond tower view . . . . . . . . . . . . . 10.7.2.9 binoculars . . . . . . . . . . . . . . . . . . . . 10.7.2.6 by pilot . . . . . . . . . . . . . . . . . . . . . . . 10.8.1 pilot . . . . . . . . . . . . . . . . . . . . . . . . 10.8.1.1 alternative instruction . . . . . . . . . 10.8.1.3 maintain separation . . . . . . . . . . 10.8.1.2 traffic information . . . . . . . . . . . 10.8.1.4 traffic information . . . . . . . . . . . . . . 10.7.2.5 using visual observation conditions . . . 10.7.2 wide margins . . . . . . . . . . . . . . . . . . 10.7.2.8 Sequence aircraft . . . . . . . . . . . . . . . . . . . 11.1.1 Serviceability of movement area . . . . . . . 12.1.1.4 SFIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.7.9.2 alerting service . . . . . . . . . . . . . . . 9.7.9.2.2 service provision . . . . . . . . . . . . . . 9.7.9.2.3 Short range navaid tolerances . . . . . . . . . 10.4.7.3 SID amended level . . . . . . . . . . . . . . . . . 11.2.1.4 speed amendment . . . . . . . . . . . . . . 11.2.2.3 visual departure in lieu of . . . . . . . . . 11.2.2.8 Signals radio or light . . . . . . . . . . . . . . . . . . 12.7.3.1 Simultaneous opposite direction parallel runway operations see SODPROPS Simultaneous parallel operations dependent runways . . . . . . . . . . . . . 10.9.8.1 independent runways . . . . . . . . . . . . 10.9.8.2 multiple landing/take-off paths . . . . . . 10.9.8 SIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.7.9.1 alerting service . . . . . . . . . . . . . . . 9.7.9.1.1 provision . . . . . . . . . . . . . . . . . . . . 9.7.9.1.2 terminating . . . . . . . . . . . . . . . . . . 9.7.9.1.9 SODPROPS application . . . . . . . . . . . . . . . . . . . . 11.1.9 arriving aircraft . . . . . . . . . . . . . . . . 11.1.9.2 departure track monitoring . . . . . . . . 11.1.9.6 localiser or GBAS failure . . . . . . . . . . 11.1.9.3 traffic information . . . . . . . . . . . . . . 11.1.9.4 Special Use Airspace (SUA) . . . . . . . . . . . . . 2.4.3 design . . . . . . . . . . . . . . . . . . . . . . . . 2.4.8 Speed control data table, arriving and departing aircraft . . . . . . . . . . . . . . 9.5.1.4 formation and fuel critical . . . . . . . 9.5.1.3 responsibilities . . . . . . . . . . . . . . . . 9.5.1 management techniques, application 10.3.2.4 restrictions, airspace . . . . . . . . . . . . 2.4.1.1.2 SID . . . . . . . . . . . . . . . . . . . . . . . . 11.2.2.3 SPL message application . . . . . . . . . . . . . 7.1.8.2 SSR code management changes . . . . . . . . . . . . . . . . . . . . . . 9.7.3.4 dissemination . . . . . . . . . . . . . . . . . . 9.7.3.3 garbling . . . . . . . . . . . . . . . . . . . . . . 9.7.3.8 issue on first contact . . . . . . . . . . . . . 9.7.3.2 Mode 3A . . . . . . . . . . . . . . . . . . . . . 9.7.3.1 verification . . . . . . . . . . . . . . . . . . .9.7.3 Mode A/C/S, ADS-B errors . . . . . . . . . 9.7.3.9 Standard message addressing . . . . . . . . . . . . . . . . . . . . . .7.1.3 compilation . . . . . . . . . . . . . . . . . . . . .7.1.2 Standards departure general aviation VFR flights 10.3.9.2 separation . . . . . . . . . . . . . . . . . . . . .10.1.1 STAR clearance, responsible sector to issue . 9.2.8.2 clearances . . . . . . . . . . . . . . . . . . . . . .9.2.8 expectation . . . . . . . . . . . . . . . . . . . 9.2.8.3 rejoining . . . . . . . . . . . . . . . . . . . . 9.2.8.12 use of . . . . . . . . . . . . . . . . . . . . . . . 9.2.8.1 vector . . . . . . . . . . . . . . . . . . . . . . 9.2.8.10 vectoring . . . . . . . . . . . . . . . . . . . . 9.2.8.11 Step climb . . . . . . . . . . . . . . . . . . . . . . . 10.5.2.4 descent . . . . . . . . . . . . . . . . . . . . . 10.5.2.5 Stop Bars . . . . . . . . . . . . . . . . . . . . . . 12.3.1.15 contingency advice . . . . . . . . . . . . 12.3.1.18 operations . . . . . . . . . . . . . . . . . . 12.11.1.3 pre-contingency measures . . . . . . . 12.3.1.17 switching faults . . . . . . . . . . . . . . . 12.3.1.16 Strayed aircraft . . . . . . . . . . . . . . . . . . . 4.2.12.1 Supplementary messages RQP . . . . . . . . . . . . . . . . . . . . . . . . . 7.1.8.3 RQPL . . . . . . . . . . . . . . . . . . . . . . . . . .7.1.8 SPL . . . . . . . . . . . . . . . . . . . . . . . . . 7.1.8.2 Surveillance final approach . . . . . . . . . . . . . . . . 11.1.1.6 Information Service . . . . . . . . . . . . . . 9.7.9.1 position symbol . . . . . . . . . . . . . . . 10.4.6.1 standard or aircraft report . . . . . . . . 10.6.5.1 system identification . . . . . . . . . . . . . . . . . .9.7.2 position information . . . . . . . . . . . .9.7.8 SURVEREP report procedure . . . . . . . . . . 5.1.2.3 T Tailwind limitations . . . . . . . . . . . . . . . . 12.2.1.3 Take-off cancelling . . . . . . . . . . . . . . . . . . . 12.3.2.16 clearance phraseology . . . . . . . . . . 12.3.2.12 formation, multiple aircraft . . . . . . 12.3.2.17 immediate . . . . . . . . . . . . . . . . . . 12.3.2.15 initial turn . . . . . . . . . . . . . . . . . . 12.3.2.13 report . . . . . . . . . . . . . . . . . . . . . . . 3.1.5.4 MATS Version 75.1 Effective: 19 March 2026 to 08 July 2026 P 21 Index Taxi clearance, time check . . . . . . . . . . . 12.3.1.7 guidance instructions . . . . . . . . . . . 12.9.3.3 instructions . . . . . . . . . . . . . . . . . . 12.3.1.5 Taxiing grassed areas . . . . . . . . . . . . . . . . .12.3.1.10 instructions crossing runway . . . . . . .12.3.1.12, 12.3.1.13 on runway . . . . . . . . . . . . . . . . . . .12.3.1.11 Taxiway separation responsibilities . . . . . 10.9.9.1 Telephony acknowledging receipt . . . . . . . . . . 6.1.4.11 designators . . . . . . . . . . . . . . . . . . . 6.2.1.3 emergency message . . . . . . . . . . . . 6.1.4.10 establishing communications . . . . . . . 6.1.4.1 general broadcasts . . . . . . . . . . . . . . 6.1.4.2 omitting phraseology . . . . . . . . . . . 6.1.4.12 protocols, reply to voice call . . . . . . . . . 6.1.4 special task designators . . . . . . . . . . 6.2.1.4 transcription requirements, advice . . . 6.1.4.9 Terrain clearance vectoring . . . . . . . . . . . . 9.7.11 pilot terrain clearance, approving . . . 9.7.11.2 range scales . . . . . . . . . . . . . . . . . . 9.7.11.3 responsibility . . . . . . . . . . . . . . . . . . . 9.7.11 TFR application . . . . . . . . . . . . . . . . . . . . . . 7.1.9 message . . . . . . . . . . . . . . . . . . . . . 7.1.9.1 Time of passing matrix using Appleyard scale . . . . . . . . . . . . . . . 10.3.20.2.5 system . . . . . . . . . . . . . . . . . . . . . . 1.3.1.3 units . . . . . . . . . . . . . . . . . . . . . 1.3.1.2 Tower, approach control . . . . . . . . . . . . . 2.2.1.3 Traffic information . . . . . . . . . . . . . . . . . . . 9.1.5 assessment and content . . . . . . . . . . . . 9.1.6 Class G airspace - surveillance not available . . . . . . . . . . . . 9.1.6.7 flight category . . . . . . . . . . . . . . . . . 9.1.5.1 military aircraft . . . . . . . . . . . . . . . . . 9.1.5.5 position information . . . . . . . . . . . . . 9.1.6.5 SODPROPS . . . . . . . . . . . . . . . . . . 11.1.9.4 VFR aircraft receiving a SIS/SFIS . . . . 9.1.5.2 Transponder codes, controller actions . . . . . . . . . . . . 4.2.6 TSAD control of circuit traffic . . . . . . . . . . 12.9.4.6 function . . . . . . . . . . . . . . . . . . . . . 12.9.4.5 identification of aircraft, methods . . . 12.9.4.7 use . . . . . . . . . . . . . . . . . . . . . . . . . . 12.9.4 exception . . . . . . . . . . . . . . . . . 12.9.4.4 TWY lights . . . . . . . . . . . . . . . . . . . . . .12.11.1.4 U Ultimate Fallback Display (UFB) vertical, separation standards . . . . . 10.5.1.2 Unauthorised RPAS . . . . . . . . . . . . . . . . 4.2.22.2 Undercarriage, landing clearance . . . . . . 12.5.5.1 Unidentified aircraft . . . . . . . . . . . . . . . 4.2.12.2 Units of measurement . . . . . . . . . . . . . . . 1.3.1.2 time . . . . . . . . . . . . . . . . . . . . . . . . . 1.3.1.3 Unspecified operations Buffers . . . . . . . . . . . . . . . . . . . . . 10.10.3.2 NOTAM direct liaison . . . . . . . . . . . . 10.10.3 Urgent SAR message . . . . . . . . . . . . . . . . 13.1.1 V Vapour zone . . . . . . . . . . . . . . . . . . . . . . 4.2.11 VASIS PAPI . . . . . . . . . . . . . . . . . . . . . . . 12.11.1.7 systems . . . . . . . . . . . . . . . . . . . . 12.11.1.7 Vector, STAR . . . . . . . . . . . . . . . . . . . . . 9.2.8.10 Vectoring considerations . . . . . . . . . . . . . . . . . 9.7.10.3 prior to . . . . . . . . . . . . . . . . . . . 12.9.2.4 continuing . . . . . . . . . . . . . . . . . . . . 9.7.10.8 final approach . . . . . . . . . . . . . . . . . . 11.1.2 general principles . . . . . . . . . . . . . . 9.7.10.1 prohibited . . . . . . . . . . . . . . . . . . . . 9.7.10.2 self-navigation . . . . . . . . . . . . . . . . . . 12.9.2 system-derived distance . . . . . . . . . . 9.7.10.4 terminating . . . . . . . . . . . . . . . . . . . 9.7.10.5 terrain clearance . . . . . . . . . . . . . . . . 9.7.11 through final approach . . . . . . . . . . . 11.1.2.4 uncoordinated vector . . . . . . . . . . . . 12.9.2.5 Vehicle critical area protection . . . . . . . 12.12.1.3 Verbal, recording information . . . . . . . . . . 2.5.1.6 Vertical buffers . . . . . . . . . . . . . . . . . . . . . . . . 9.4.3 limits and dimensions, determining . . . . 2.4.8.3 danger areas . . . . . . . . . . . . . . . 2.4.8.11 VFR AWK aircraft, airspace . . . . . . . . . . . . 2.4.1.4 changing procedure . . . . . . . . . . . . . 6.3.2.10 clearance at night . . . . . . . . . . . . . . . 9.2.2.6 departure class D aerodrome . . . . . . . . 9.2.6 flights in IMC . . . . . . . . . . . . . . . . . . . 4.2.14 special . . . . . . . . . . . . . . . . . . . . . . . . 9.2.7 VFR-on-top . . . . . . . . . . . . . . . . . . . . . . . . 9.2.5 predeparture clearance . . . . . . . . . . . . 9.2.5 Visual separation PJE aircraft for parachutists . . . . . 5.2.2.6 with parachutists - Tower . . . . . . . 5.2.2.7 Visual approach go-around . . . . . . . . . . . . . . . . . . . . 12.5.4.2 procedures . . . . . . . . . . . . . . . . . . . 11.1.11 authorising . . . . . . . . . . . . . . . 11.1.11.1 Heavy jet aircraft . . . . . . . . . . . 11.1.11.3 straight-in approach navaid unserviceable . . . . . . . 11.1.11.4 Visual Surveillance Systems using . . . . . . . . . . . . . . . . . . . . . . . . 12.9.5 Voice recording . . . . . . . . . . . . . . . . . . . . . 2.5.3 P 22 Effective: 19 March 2026 to 08 July 2026 MATS Version 75.1 22 Index W Wake turbulence category . . . . . . . . . . . 10.6.1.1 Wake turbulence separation categories displaced landing threshold . . . . . 10.6.2.3 intermediate departures . . . . . . . 10.6.2.2 opposite direction . . . . . . . . . . . 10.6.3.1 caution . . . . . . . . . . . . . . . . . . . . . . 10.6.1.6 conditions . . . . . . . . . . . . . . . . . . . . . 10.6.1 distance-based . . . . . . . . . . . 10.6.4, 10.6.5 Weapons training area . . . . . . . . . . . . . . 2.4.8.15 Weather observations . . . . . . . . . . . . . . . 3.1.5.2 Wind ATIS, wind shear . . . . . . . . . . . . . . . . . 3.1.3 threshold, providing . . . . . . . . . . . . . . 3.1.1.7 wind shear advice controlled aerodromes . . . . . . . . . . 3.1.3 uncontrolled aerodromes . . . . . . . . 3.1.4 Definitions MATS Version 75.1 Effective: 19 March 2026 to 08 July 2026 P 23 1 Definitions 1.1 Glossary - terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 1.1.1 Terms and definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 1.2 Glossary - contractions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 1.2.1 Abbreviations and acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 1.3 Glossary - metrics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 1.3.1 Units of measurement and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 1.4 Flight data records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 1.4.1 Information to be recorded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 P 24 Effective: 19 March 2026 to 08 July 2026 MATS Version 75.1 Glossary - terms Definitions 1.1.1.1 1.1 Glossary - terms 1.1.1 Terms and definitions 1.1.1.1 Introduction The terms and definitions published follow those defined within ICAO documents where possible. 1.1.1.2 'Service' and 'unit' Throughout the manual, the term 'service' is used to designate functions or service rendered and the term 'unit' is used to designate a collective body performing a service. 1.1.1.3 A Term Definition Accelerate Stop Distance Available (ASDA) The take-off run available plus the length of stopway available (if stopway is provided). Acceptance of Control The act of accepting responsibility for the control of an aircraft. Accepting Unit/Controller Air traffic control unit/Controller next to take control of an aircraft. Accident (for ATS reporting) An occurrence that affects or could affect air safety associated with the operation of an aircraft or the ATS system in which it is known or believed that either physical damage has been caused to a person or property or an aircraft is missing and believed to be lost. Active Bay A bay or portion in which strips are held while they are actively in use for air traffic services purposes. Addressee Originator Indicator The location indicator followed by a three-letter designator and a filler character to indicate an organisation at the particular location. Example 'YSSYQFAX' is 'Qantas at Sydney' the filler character used to represent a department or division to facilitate internal distribution. 'YSSYQFAO' represents 'Qantas Operations at Sydney'. Administering Authority With respect to a Danger Area or Military Operating Area this is the agency nominated to exercise the conditions specified for the area and, where authorised, the Air Traffic Service provider for that area. See also ‘Controlling Authority’ in these definitions. ADS-B Equipped Aircraft Aircraft capable of transmitting Automatic Dependent Surveillance Broadcast (ADS-B) data. ADS-B Ground Station A ground-based system that receives aircraft position, altitude, speed and other parameters and presents it to air traffic control facilities. ADS-B Position Symbol - High-Quality A high-quality ADS-B position symbol reflects required position accuracy, position integrity, and a reliability that meets the requirements for the application of surveillance separation standards. ADS-B Position Symbol - Low-Quality A low-quality ADS-B position symbol reflects required position accuracy, position integrity, and a reliability that meets the requirements for the application of procedural separation standards. Definitions Glossary - terms 1.1.1.3 MATS Version 75.1 Effective: 19 March 2026 to 08 July 2026 P 25 ADS-C Agreement A reporting plan which establishes the conditions of Automatic Dependent Surveillance - Contract (ADS-C) data reporting (i.e. Data required by the air traffic services unit and frequency of ADS-C reports which have to be agreed to prior to the provision of air traffic services). ADS-C Report Symbol The position symbol displayed when an ADS-C report is received by the ground system. Advanced Surface Movement Guidance and Control System (A-SMGCS) A system providing routing, guidance and surveillance for the ground control of aircraft and vehicles. Aerodrome A defined area of land or water (including any buildings, installations and equipment) intended to be used either wholly or in part for the arrival, departure and movement of aircraft. Aerodrome Beacon An aeronautical beacon used to indicate the location of an aerodrome from the air. Aerodrome Control Service Air traffic control service for aerodrome traffic. Aerodrome Control Tower A unit established to provide air traffic control service to aerodrome traffic. Aerodrome Elevation The elevation of the highest point of the landing area. Aerodrome Ground Surveillance System Surveillance that provides positional information on aircraft and vehicles on the movement areas and via a display system. This term includes systems such as A-SMGCS and SMR. Aerodrome Meteorological Minima (ceiling and visibility minima) The minimum heights of cloud base (ceiling) and minimum values of visibility prescribed for the purpose of determining the usability of an aerodrome either for take-off or landing. Aerodrome Proprietor Any owner, licensee, authority, corporation, or any other body which has a legal responsibility for a particular aerodrome. Aerodrome Reference Point (ARP) The designated geographical location of an aerodrome. Aerodrome Traffic All traffic on the manoeuvring area of an aerodrome and all aircraft flying in, entering or leaving the traffic circuit. Aerodrome Traffic Circuit The specified path to be flown by aircraft operating in, entering or leaving the traffic circuit. Note: At a controlled aerodrome an aircraft is in the traffic circuit when it is within the CTR and established on a leg of the circuit. Aerodrome Traffic Zone (ATZ) An airspace of defined dimensions established around an aerodrome for the protection of aerodrome traffic. Aerodrome Weather Information Broadcast (AWIB) Broadcasts of actual weather conditions may be made on navaids from AWS and advanced aviation AWS sites. Information provided in Aerodrome Weather Information Broadcasts is in similar format to that of an ATIS. Aeronautical Beacon An aeronautical ground light visible at all azimuths, either continuously or intermittently, to designate a particular point on the surface of the earth. Aeronautical Fixed Service (AFS) A telecommunication service between specified fixed points provided primarily for the safety of air navigation and for the regular, efficient and economical operation of air services. Aeronautical Fixed Station A station in the aeronautical fixed service. Term Definition P 26 Effective: 19 March 2026 to 08 July 2026 MATS Version 75.1 Glossary - terms Definitions 1.1.1.3 Aeronautical Fixed Telecommunications Network (AFTN) A world-wide system of aeronautical fixed circuits provided for the exchange of messages and/or digital data between aeronautical fixed stations having the same or compatible communications characteristics. Aeronautical Ground Light Any light specially provided as an aid-to-air navigation, other than a light displayed on an aircraft. Aeronautical Information Circular (AIC) A notice containing information that does not qualify for the origination of a NOTAM, or for inclusion in the AIP, but which relates to flight safety, air navigation, technical, administrative or legislative matters. Aeronautical Information Publication (AIP) A publication issued by or with the authority of a State and containing aeronautical information or instructions of a lasting character essential to air navigation. Aeroplane A power-driven heavier-than-air aircraft, deriving its lift in flight chiefly from aerodynamic reactions on surfaces, which remain fixed under given conditions of flight. AFTN Communications Centre An AFTN station whose primary function is the relay or retransmission of AFTN traffic. AIP Supplement Temporary changes to information contained in the AIP which are published by means of special pages. Airborne An aircraft is considered airborne when all parts of the aircraft are off the ground. Airborne Collision Avoidance System (ACAS) An aircraft system based on secondary surveillance radar (SSR) transponder signals which operates independently of ground-based equipment to provide advice to the pilot on potential conflicting aircraft that are equipped with SSR transponders. Aircraft Address (24 bit code) See 'ICAO 24 bit Aircraft Address (24 bit code)’ in these definitions. Aircraft Identification (ACID) A group of letters, figures or a combination thereof which is either identical to, or the coded equivalent of, the aircraft callsign to be used in air-ground communications, and which is used to identify the aircraft in ground-ground air traffic services communication. Aircraft Weight Categories The weight categories in which aircraft are divided to determine the impact of wake turbulence on other aircraft operations. Air-Ground Communication Two-way communications between aircraft and stations on the surface of the earth. AIRMET Information Information issued by a meteorological watch office concerning the occurrence or expected occurrence of specified en route weather phenomena which may affect the safety of low-level (below A100) aircraft operations and which was not already included in the forecast issued for low-level flights in the flight information region concerned or the sub-area thereof. Air Report (AIREP) A report prepared by the pilot during the course of a flight in conformity with the requirements for position, operational or meteorological reporting specified in the AIREP form. Airservices Airservices Australia Airspace Release A defined volume of airspace normally under the jurisdiction of one controlling/administering authority that is temporarily released, by common agreement, for exclusive use of another. Term Definition Definitions Glossary - terms 1.1.1.3 MATS Version 75.1 Effective: 19 March 2026 to 08 July 2026 P 27 Airspace Reservation A defined volume of airspace normally under the jurisdiction of one aviation authority and temporarily reserved, by common agreement, for exclusive use of another. Airspace speed limitation A speed limit specified for a particular class of airspace. Air-Taxiing Movement of a helicopter/VTOL above the surface of an aerodrome, normally in ground effect and at a speed normally less than 20 kt. Air-to-air Refuelling (AAR) Transfer of fuel between aircraft whilst airborne. Air-to-air Refuelling Anchor Pattern A prescribed area published in DAH for the purpose of AAR. Air-to-air Refuelling Anchor Point A defined reference point upon which an anchor refuelling pattern is orientated. Air-to-air Refuelling Control Point (ARCP) The planned point on an air-to-air refuelling track that the receiver will be in position to commence AAR. Air-to-air Refuelling Exit Point A point on an air-to-air refuelling track where air-to-air refuelling terminates. Air-to-air Refuelling Tanker Orbit Pattern A standard manoeuvring area based on the ARCP for a tanker to establish the formation prior to track refuelling. Air-to-air Refuelling Track A prescribed route designated for air-to-air refuelling. Air Traffic All aircraft in flight or operating on the manoeuvring area of an aerodrome. Air Traffic Control Clearance Authorisation for aircraft to proceed under conditions specified by an Air Traffic Control unit. Note 1: For convenience, the term 'air traffic control clearance' is frequently abbreviated to 'clearance' when used in appropriate context. Note 2: The abbreviated term 'clearance' may be prefixed by 'taxi', 'take-off', 'departure', 'airways', 'en route', 'approach' or 'landing' to indicate the particular portion of the flight to which the air traffic control clearance relates. Air Traffic Control Instructions Directives issued by Air Traffic Control for the purpose of requiring a pilot to take a specific action. Air Traffic Control Service A service provided for the purpose of: a) preventing collisions: i) between aircraft; and ii) on the manoeuvring area between aircraft and obstructions; and b) expediting and maintaining an orderly flow of air traffic. Air Traffic Service (ATS) A generic term meaning (variously) flight information service, alerting service, air traffic advisory service, air traffic control service (area control service, approach control service or aerodrome control service). Air Traffic Services Airspaces Airspaces of defined dimensions, alphabetically designated, within which specific types of flights may operate and for which air traffic services and rules of operation are specified. Air Traffi