ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1

Periodic Inspections.................................................................... 4-3 System Maintenance ....................................................................... 4-4 Electrical Diagram ........................................................................... 4-7 Chapter 5 Attitude Indicator and Directional Gyro System Description ......................................................................... 5-1 Airworthiness Limitations ................................................................. 5-2 Servicing, Troubleshooting, and Periodic Inspections ..................... 5-3 System Maintenance ....................................................................... 5-4 Figures and Electrical Diagrams ..................................................... 5-5 Chapter 6 KX 165A COMM/NAV System System Description ......................................................................... 6-1 Airworthiness Limitations ................................................................. 6-2 Servicing, Troubleshooting, and Periodic Inspections ..................... 6-3 System Maintenance ....................................................................... 6-4 Figures and Electrical Diagrams ..................................................... 6-5 Chapter 7 GTX 330 with ADS-B Out System Description ......................................................................... 7-1 Airworthiness Limitations ................................................................. 7-2 Servicing, Troubleshooting, and Periodic Inspections ..................... 7-3 System Maintenance ....................................................................... 7-5 Figures and Electrical Diagrams ................................................... 7-11 Chapter 8 GTN 650 System Description ......................................................................... 8-1 Airworthiness Limitations ................................................................. 8-2 Servicing, Troubleshooting, and Periodic Inspections ..................... 8-3 System Maintenance ....................................................................... 8-4 Figures and Electrical Diagrams ..................................................... 8-5 Chapter 9 Dual Start Collective Control Installation System Description ......................................................................... 9-1 Airworthiness Limitations ................................................................. 9-1 Servicing, Troubleshooting, and Periodic Inspections ..................... 8-1 System Maintenance ....................................................................... 8-2 Figures and Electrical Diagrams ..................................................... 8-2 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 8 ix Jan 15/19 TABLE OF CONTENTS Chapter Description Page Chapter 10 GNC 255A Nav/Com System Description ....................................................................... 10-1 Airworthiness Limitations ............................................................... 10-2 Servicing, Troubleshooting, and Periodic Inspections ................... 10-3 System Maintenance ..................................................................... 10-4 Figures and Electrical Diagrams ................................................... 10-5 Chapter 11 MD200 Series CDI System Description ....................................................................... 11-1 Airworthiness Limitations ............................................................... 11-1 Servicing, Troubleshooting, and Periodic Inspections ................... 11-2 System Maintenance ..................................................................... 11-3 Figures and Electrical Diagrams ................................................... 11-3 Chapter 12 GMA 350Hc Audio Panel System Description ....................................................................... 12-1 Airworthiness Limitations ............................................................... 12-2 Servicing, Troubleshooting, and Periodic Inspections ................... 12-3 System Maintenance ..................................................................... 12-4 Figures and Electrical Diagrams ................................................... 12-5 Chapter 13 GTX 345 Transponder System Description ....................................................................... 13-1 Airworthiness Limitations ............................................................... 13-2 Servicing, Troubleshooting, and Periodic Inspections ................... 13-2 System Maintenance ..................................................................... 13-3 Figures and Electrical Diagrams ................................................... 13-5 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 8 x Jan 15/19 INTENTIONALLY LEFT BLANK ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 9 xi Apr 30/2020 EFFECTIVE PAGE LIST Page Date Page Date i Apr 30/2020 ii Nov 11/11 iii Jan 9/14 iv Jan 9/14 v Apr 30/2020 vi Jan 15/19 vii Apr 30/2020 viii Aug 28/17 ix Jan 15/19 x Jan 15/19 xi Apr 30/2020 xii Apr 30/2020 INTRO-1 Jan 15/19 INTRO-2 Apr 30/2020 INTRO-3 Aug 28/17 INTRO-4 Aug 28/17 1-1 Jan 9/14 1-2 Apr 30/2020 1-3 Jan 9/14 1-4 Nov 18/08 1-5 Nov 18/08 1-6 Nov 18/08 1-7 Nov 18/08 1-8 Nov 18/08 2-1 Nov 21/08 2-2 Apr 30/2020 2-3 Nov 21/08 2-4 Nov 21/08 2-5 Nov 21/08 2-6 Nov 21/08 2-7 Nov 21/08 2-8 Nov 21/08 3-1 Dec 8/08 3-2 Apr 30/2020 3-3 Dec 8/08 3-4 Dec 8/08 3-5 Dec 8/08 3-6 Dec 8/08 3-7 Dec 8/08 3-8 Dec 8/08 4-1 Dec 8/08 4-2 Apr 30/2020 4-3 Dec 8/08 4-4 Dec 8/08 4-5 Dec 8/08 4-6 Dec 8/08 4-7 Dec 8/08 4-8 Dec 8/08 5-1 Nov 11/11 5-2 Apr 30/2020 5-3 Nov 11/11 5-4 Nov 11/11 5-5 Nov 11/11 5-6 Nov 11/11 5-7 Nov 11/11 5-8 Nov 11/11 6-1 Jan 9/14 6-2 Apr 30/2020 6-3 Jan 9/14 6-4 Jan 9/14 6-5 Jan 9/14 6-6 Jan 9/14 6-7 Jan 9/14 6-8 Jan 9/14 6-9 Jan 9/14 6-10 Jan 9/14 7-1 Apr 15/15 7-2 Apr 30/2020 7-3 Apr 15/15 7-4 Apr 15/15 7-5 Apr 15/15 7-6 Apr 15/15 7-7 Apr 15/15 7-8 Apr 15/15 7-9 Apr 15/15 7-10 Apr 15/15 7-11 Apr 15/15 7-12 Aug 28/17 7-13 Apr 15/15 7-14 Apr 15/15 7-15 Apr 15/15 7-16 Apr 15/15 7-17 Apr 15/15 7-18 Apr 15/15 8-1 Jan 15/19 8-2 Jan 15/19 8-3 Jan 15/19 8-4 Aug 28/17 8-5 Jan 15/19 8-6 Jan 15/19 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 9 xii Apr 30/2020 EFFECTIVE PAGE LIST Page Date Page Date 8-7 Jan 15/19 8-8 Aug 28/17 8-9 Jan 15/19 8-10 Jan 15/19 8-11 Jan 15/19 8-12 Jan 15/19 8-13 Aug 28/17 8-14 Aug 28/17 8-15 Apr 30/2020 8-16 Apr 30/2020 8-17 Apr 30/2020 8-18 Apr 30/2020 8-19 Apr 30/2020 8-20 Apr 30/2020 8-21 Apr 30/2020 8-22 Apr 30/2020 8-23 Jan 15/19 8-24 Jan 15/19 9-1 Apr 30/2020 9-2 Apr 15/15 9-3 Apr 15/15 9-4 Apr 15/15 10-1 Aug 28/17 10-2 Apr 30/2020 10-3 Aug 28/17 10-4 Aug 28/17 10-5 Aug 28/17 10-6 Aug 28/17 10-7 Aug 28/17 10-8 Aug 28/17 10-9 Apr 30/2020 10-10 Apr 30/2020 10-11 Apr 30/2020 10-12 Apr 30/2020 11-1 Apr 30/2020 11-2 Aug 28/17 11-3 Aug 28/17 11-4 Aug 28/17 11-5 Aug 28/17 11-6 Aug 28/17 11-7 Aug 28/17 11-8 Aug 28/17 11-9 Jan 15/19 11-10 Jan 15/19 12-1 Jan 15/19 12-2 Jan 15/19 12-3 Jan 15/19 12-4 Jan 15/19 12-5 Jan 15/19 12-6 Apr 30/2020 12-7 Jan 15/19 12-8 Jan 15/19 12-9 Jan 15/19 12-10 Jan 15/19 12-11 Jan 15/19 12-12 Jan 15/19 13-1 Jan 15/19 13-2 Jan 15/19 13-3 Jan 15/19 13-4 Jan 15/19 13-5 Jan 15/19 13-6 Jan 15/19 13-7 Jan 15/19 13-8 Jan 15/19 13-9 Jan 15/19 13-10 Jan 15/19 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 8 INTRO-1 Jan 15/19 INTRODUCTION Avionic System(s) Effectivity A. The data presented in this supplement is applicable to the optional avionic systems listed in the following table: Avionic System(s) Avionic System Enstrom Part Number Attitude Indicator 28-22062-( ) Collective Control Installation (Dual Start) 28-16080-101 Directional Gyro 28-22062-( ) GDL 69/69A 28-22082-( ) GMA 350Hc 28-22048-5 GNC 255A 28-22063-5 GNS 430W 28-22037-( ) GNS 530W 28-22050-( ) GTN 650 28-22112-3 GTX 330 28-22028-1 GTX 345 28-22028-3 KX 165A COMM/NAV 28-22063-( ) MD200-306 VOR/LOC/GS Indicator 28-22095-1 MD200-706 VOR/LOC/GS Indicator 28-22095-3 SAE5-35 Altitude Data System 28-22090-( ) SL30 28-22069-1 Aircraft Effectivity A. The data presented in this F-28F/280F Series Maintenance Manual Supplement is applicable to all Enstrom F-28F and 280F series model helicopters. Supplemental Changes and Revisions A. Subsequent to the publication of the initial issue of this supplement, changes in the avionics equipment, support concepts and procedures, as well as information developed by experience may affect the contents of this supplement. To ensure that coverage in the supplement continues to reflect such changes, revised information is released by one of the following methods: 1. Revision - A revision alters portions of the manual by replacement, addition, and/or removal of pages. 2. Reissue - A reissue of this supplement will occur when the amount of changes warrants complete reissue. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 9 INTRO-2 Apr 30/2020 3. Service Directive Bulletins – Used to direct the owner/operator and/or maintenance personnel to make mandatory changes, improvements, or inspections to the aircraft applicable to the entire fleet or a segment of the fleet that are typically safety/airworthiness related. The information provided in the Service Directive Bulletins will be incorporated in the maintenance manual as needed at a later date. At the time of incorporation, the Service Directive Bulletin is superseded by the maintenance manual, and accomplishment or sign-off of the Service Directive Bulletin in the maintenance records book is no longer required. A detailed entry should be made in the maintenance records to indicate that the Service Directive Bulletin is superseded by the maintenance manual. 4. Service Information Letters – Used to transmit information, recommendations, and general service instructions to the aircraft owner/operator and/or maintenance personnel applicable to the entire fleet or a segment of the fleet. The information provided in the Service Information Letters will be incorporated into the maintenance manual as needed at a later date. 5. Service Instructions – Used to provide the owner/operator and/or maintenance personnel with information that is applicable to specific aircraft and does not meet the criteria of a Service Information Letter or Service Directive Bulletin. Service Instructions will not be distributed to the entire fleet. Enstrom distributes maintenance manual supplement revisions and reissues in electronic form via the Enstrom Helicopter website: www.enstromhelicopter.com (follow the applicable link under the Technical Publications section of the Technical Support page). Revision update notices are sent via email to owners and operators who are registered with Enstrom. Registration to receive publication mailing notifications can be coordinated through the Enstrom Technical Publications Administrator. A complete manual hardcopy may be ordered through Enstrom Customer Service. Service Information Letters and Service Directive Bulletins incorporated into the maintenance manual are logged in the Service Information Letter Index or the Service Directive Bulletin Index (as appropriate) located on the Enstrom Helicopter website: www.enstromhelicopter.com (follow the applicable link under the Technical Publications section of the Technical Support page). Each index numerically lists all Service Information Letters and Service Directive Bulletins, respectively, and identifies those which have been incorporated into the maintenance manual. All Service Information Letters and Service Directive Bulletins are also located under the Technical Publications section of the website. Notice of recently released Service Information Letters and Service Directive Bulletins is provided via email notification. Registration to receive publication mailing notifications can be coordinated through the Enstrom Technical Publications Administrator. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 7 INTRO-3 Aug 28/17 Application of Warnings, Cautions, and Notes A. Throughout this supplement, it is necessary to highlight or emphasize important points to avoid injury to personnel, damage to equipment, or unnecessary confusion while performing maintenance procedures. The terms “WARNING,” “CAUTION,” and “NOTE” are used to draw attention to instructions or information deserving special consideration. B. WARNING Calls attention to use of materials, processes, methods, procedures, or limits that must be followed to avoid injury to personnel. C. CAUTION Calls attention to methods and procedures that must be followed to avoid damage to equipment. D. NOTE Calls attention to information essential to highlight for clarification of procedures or to make a task easier. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 7 INTRO-4 Aug 28/17 INTENTIONALLY LEFT BLANK ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 4 1-1 Jan 9/14 CHAPTER 1 SL30 NAV COM SECTION 1 SYSTEM DESCRIPTION 1-1. System Description A. The SL30 NAV/COM unit is a VHF Navigation/Communications Transceiver utilizing high performance Digital Signal Processing (DSP) filtering. It includes a 760- channel VHF Com transceiver and a 200-channel VOR/LOC/GS navigation receiver. B. Functions and features of the SL30 include automatic decoding of the Morse code station identifier for VOR/LOC, memory storage for most-used frequency, built-in course deviation indicator, standby Com and Nav frequency monitoring, Nav receiving for both VOR and LOC navigation signals, and built in Glideslope receiver. C. The components of the SL30 system include the panel mounted SL30 unit and nav and com antennas. The SL30 provides output to a VOR/LOC/GS Indicator and to either a VOX ICS or an audio panel. D. Power to the SL30 unit is provided via the COM circuit breaker (CB27) (5 Amp) and the NAV circuit breaker (CB39) (2 Amp) located on the left side of the center pedestal. E. Refer to the 280FX Rotorcraft Flight Manual Supplement and the current vendor operating manuals/instructions for operation of the SL30 system. 1-2. Vendor Publications A. The SL30 is to be operated and maintained I/A/W the current vendor’s instructions to ensure the continued airworthiness of the aircraft. The applicable vendor manuals are listed in Table 1-1. Table 1-1. Vendor Manuals Component Publication Vendor SL30 SL30 Nav Com Pilot’s Guide Garmin International 1200 E. 151 st Street Olathe, KS 66062 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 9 1-2 Apr 30/2020 SECTION 2 AIRWORTHINESS LIMITATIONS 2-1. Airworthiness Limitations A. The Airworthiness Limitations Section is FAA approved and specifies inspections and other maintenance required under 14 CFR §§ 43.16 and 91.403 of the Federal Aviation Regulations unless an alternative program has been FAA approved. B. For EASA approval, the Airworthiness Limitations Section is approved and variations must also be approved. C. All components of the SL30 system are “on condition”. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 4 1-3 Jan 9/14 SECTION 3 SERVICING, TROUBLESHOOTING, AND PERIODIC INSPECTIONS 3-1. Servicing A. The SL30 contains no user serviceable components or assemblies. Operations involving the removal of the SL30 or any other line-replaceable unit (LRU) installed as a part of the SL30 must be done by authorized maintenance technicians. 3-2. Troubleshooting A. Refer to the respective Pilot’s Operating Guide and Reference when troubleshooting problems with the SL30. 3-3. Periodic Inspections A. The following inspection checklist is intended as a guide for 100 hour/annual inspections for aircraft operating under normal conditions. More frequent inspections may be required should adverse operating conditions be encountered. Date Signature Aircraft Registration Number Aircraft Serial Number SL30 NAV/COM INITIAL EACH ITEM AFTER ACCOMPLISHMENT Inspect the following items every 100 hours or annually INITIAL 1. Inspect the electrical cables, and mounts for security, damage, and obvious defects. 2. Inspect the antennas and mount for security, damage, and obvious defects. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 1-4 Nov 18/08 SECTION 4 SYSTEM MAINTENANCE NOTE Removal or installation of equipment will change the aircraft empty weight and empty weight c.g. These changes will be recorded on the Basic Weight and Balance Record, as required (reference Enstrom F- 28F/280F Series Maintenance Manual). 4-1. SL30 4-1-1. Removal – SL30 A. Turn the SL30 and aircraft power off. Pull the NAV and COM circuit breakers out. Disable the circuit breaker by installing a cable tie or other similar device around the circuit breaker system. B. The SL30 is mounted in a tray in the radio panel of the console. Using a 3/32 hex driver, turn the cam lock to release the unit from the tray. Pull the SL30 unit from the radio panel. 4-1-2. Inspection/Repair – SL30 A. Inspect the condition and security of the tray and electrical interface. B. Inspect the condition and security of electrical cables. C. Repair procedures are not available for the SL30. 4-1-3. Installation – SL30 A. Install the SL30 into the radio panel tray and lock the unit into the tray. B. Remove the cable tie or other similar device from the NAV and COM circuit breaker stems and push the stems in to set the circuit breaker. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 1-5 Nov 18/08 4-2. Wiring Harnesses/Connectors – SL30 4-2-1. Removal – Wiring Harnesses/Connectors – SL30 CAUTION Before removing or adjusting any electrical component, ensure all electrical power is off and the battery is disconnected. A. Refer to Diagram 1-1 for the SL30 wiring interface. B. Remove the attaching hardware, clamps, connectors, leads, or wiring. C. Identify the connectors, leads, or wiring. D. Remove the component. 4-2-2. Inspection – Wiring Harnesses/Connectors – SL30 A. Inspect the plugs, connectors and receptacles for security, contact corrosion, damaged contacts, broken wires, faulty contacts, insert cracks, and faulty insulation. B. Inspect the leads and wiring for loose terminals, chafing, corrosion or deteriorated condition, faulty or damaged insulation, excessive mechanical stress, broken strands, damaged shielding, shorted shielding, routing and mounting conditions. 4-2-3. Repair – Wiring Harnesses/Connectors – SL30 A. Tighten lose terminal connectors, mounting hardware, and electrical component attachments. B. Replace miscellaneous electrical components that fail to meet the inspection requirements. C. Clean corrosion from the connections and receptacles with contact cleaner. 4-2-4. Installation – Wiring Harnesses/Connectors – SL30 A. Refer to Diagram 1-1 for the SL30 wiring interface. B. Install the electrical component and secure with attaching hardware, clamps, or cable ties. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 1-6 Nov 18/08 INTENTIONALLY LEFT BLANK ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Diagram 1-1. SL30, Sheet 1 of 1 Nov 18/08 1-7/1-8 (Blank) ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 1 2-1 Nov 21/08 CHAPTER 2 SANDIA SAE5-35 ALTITUDE DATA SYSTEM SECTION 1 SYSTEM DESCRIPTION 1-1. System Description A. The Sandia SAE5-35 is a solid state altitude data system (blind encoder) that converts pressure altitude into a digital output. The data output is referenced to 29.92 in Hg (1013 Millibars). B. The Sandia SAE5-35 outputs altitude data via Gillham Grey Code or two independent RS232 digital outputs to Mode C transponders. The transponders utilized include the Bendix/King KT73, KT76A, and KT76C; and the Garmin GTX327 and GTX330. C. Two configurations of the Sandia SAE5-35 system are available. They are part numbers 28-22090-1 and 28-22090-3. P/N 28-22090-1 is the standard system installation and P/N 28-22090-3 is the standard system with the “Altitude In-Flight Monitoring” function. D. Power to the Sandia SAE5-35 encoder is provided via the ENCDR circuit breaker (CB) (2 Amp) located on the lower left side of the center pedestal. E. Refer to the 280FX Rotorcraft Flight Manual Supplement and the current vendor operating manuals/instructions for operation of the Sandia SAE5-35 altitude data system. 1-2. Vendor Publications A. The Sandia SAE5-35 is to be operated and maintained I/A/W the current vendor’s instructions to ensure the continued airworthiness of the aircraft. The applicable vendor manuals are listed in Table 2-1. Table 2-1. Vendor Manuals Component Publication Vendor Sandia SAE5-35 1. SAE5-35 Pilot’s Guide, Document 305221 2. SAE5-35 Altitude Data System Installation Manual, Document 305186 Sandia Aerospace, Inc. 3700 Osuna Rd. NE, Suite 171 Albuquerque, NM 87109 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 9 2-2 Apr 30/2020 SECTION 2 AIRWORTHINESS LIMITATIONS 2-1. Airworthiness Limitations A. The Airworthiness Limitations Section is FAA approved and specifies inspections and other maintenance required under 14 CFR §§ 43.16 and 91.403 of the Federal Aviation Regulations unless an alternative program has been FAA approved. B. For EASA approval, the Airworthiness Limitations Section is approved and variations must also be approved. C. All components of the Sandia SAE5-35 system are “on condition”. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 1 2-3 Nov 21/08 SECTION 3 SERVICING, TROUBLESHOOTING, AND PERIODIC INSPECTIONS 3-1. Servicing A. The Sandia SAE5-35 contains no user serviceable components or assemblies. Operations involving the removal of the Sandia SAE5-35 or any other line-replaceable unit (LRU) installed as a part of the Sandia SAE5-35 must be done by authorized maintenance technicians. B. The Sandia SAE5-35 requires calibration every 24 mouths. Refer to the installation manual when calibrating the Sandia SAE5-35. 3-2. Troubleshooting A. No troubleshooting guidelines are available for the Sandia SAE5-35. 3-3. Periodic Inspections A. The following inspection checklist is intended as a guide for 100 hour/annual inspections for aircraft operating under normal conditions. More frequent inspections may be required should adverse operating conditions be encountered. Date Signature Aircraft Registration Number Aircraft Serial Number SANDIA SAE5-35 ALTITUDE DATA SYSTEM INITIAL EACH ITEM AFTER ACCOMPLISHMENT Inspect the following items every 100 hours or annually INITIAL 1. Inspect the electrical cables, and mounts for security, damage, and obvious defects. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 1 2-4 Nov 21/08 SECTION 4 SYSTEM MAINTENANCE NOTE Removal or installation of equipment will change the aircraft empty weight and empty weight c.g. These changes will be recorded on Form F-511-5, Basic Weight and Balance Record, as required (reference Enstrom F-28F/280F Series Maintenance Manual). 4-1. Sandia SAE5-35 4-1-1. Removal – Sandia SAE5-35 A. Turn the Sandia SAE5-35 and aircraft power off. Pull the ENCDR circuit breaker out. Disable the circuit breaker by installing a cable tie or other similar device around the circuit breaker system. B. The Sandia SAE5-35 is installed onto a tray mounted on a back panel bracket inside the pedestal. C. Disconnect the electrical cables. D. Slide the unit out of the tray. 4-1-2. Inspection/Repair – Sandia SAE5-35 A. Inspect the condition and security of the mounting bracket and electrical interface. B. Inspect the condition and security of electrical cables. C. Repair procedures are not available for the Sandia SAE5-35. 4-1-3. Installation – Sandia SAE5-35 A. Install the Sandia SAE5-35 onto the tray. B. Connect the electrical cables. C. Remove the cable tie or other similar device from the ENCDR circuit breaker stem and push the stem in to set the circuit breaker. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 1 2-5 Nov 21/08 4-2. Wiring Harnesses/Connectors – Sandia SAE5-35 4-2-1. Removal – Wiring Harnesses/Connectors – Sandia SAE5-35 CAUTION Before removing or adjusting any electrical component, ensure all electrical power is off and the battery is disconnected. A. Refer to Diagram 2-1 for the SL30 wiring interface. B. Remove the attaching hardware, clamps, connectors, leads, or wiring. C. Identify the connectors, leads, or wiring. D. Remove the component. 4-2-2. Inspection – Wiring Harnesses/Connectors – Sandia SAE5-35 A. Inspect the plugs, connectors and receptacles for security, contact corrosion, damaged contacts, broken wires, faulty contacts, insert cracks, and faulty insulation. B. Inspect the leads and wiring for loose terminals, chafing, corrosion or deteriorated condition, faulty or damaged insulation, excessive mechanical stress, broken strands, damaged shielding, shorted shielding, routing and mounting conditions. 4-2-3. Repair – Wiring Harnesses/Connectors – Sandia SAE5-35 A. Tighten lose terminal connectors, mounting hardware, and electrical component attachments. B. Replace miscellaneous electrical components that fail to meet the inspection requirements. C. Clean corrosion from the connections and receptacles with contact cleaner. 4-2-4. Installation – Wiring Harnesses/Connectors – Sandia SAE5-35 A. Refer to Diagram 2-1 for the Sandia SAE5-35 wiring interface. B. Install the electrical component and secure with attaching hardware, clamps, or cable ties. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 1 2-6 Nov 21/08 INTENTIONALLY LEFT BLANK ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Diagram 2-1. Sandia SAE5-35, Sheet 1 of 1 Rev. 1, Nov 21/08 2-7/2-8 (Blank) ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 2 3-1 Dec 8/08 CHAPTER 3 GNS 430W/530W GPS/WAAS NAVIGATOR SECTION 1 SYSTEM DESCRIPTION 1-1. System Description A. The 430W/530W GPS/WAAS Navigator is a panel-mounted product that contains a GPS/WAAS receiver for GPS approved primary navigation under TSO C146a, and also VHF Com and VHF Nav radios in an integrated system unit with a moving map and color display. The graphical display is used to depict traffic, weather, or terrain data. B. Four configurations of the 430W installation are available. They are part numbers 28-22037-5, 28-22037-7, 28-22037-9, and 28-22037-101. Four configurations of the 530W installation are available. They are part numbers 28-22050-5, 28-22050-7, 28- 22050-103, and 28-22050-105. The dash numbers differentiate between installations with or without VOR/LOC/GS activation and between installations that are upper or lower panel mounted. C. The 430W/530W provides optional output to a VOR/LOC/GS Indicator and to either a VOX ICS or an audio panel. D. Power to the 430W/530W unit is provided via the COMM/NAV GPS (28-22037- 5 or 28-22050-5) or the COMM GPS (28-22037-7 or 28-22050-7) circuit breaker (CB40) (5 Amp) and the COMM TX circuit breaker (CB41) (5 Amp) located on the left side of the lower panel. E. Refer to the 280FX Rotorcraft Flight Manual Supplement and the current vendor operating manuals/instructions for operation of the 430W/530W. 1-2. Vendor Publications A. The 430W/530W is to be operated and maintained I/A/W the current vendor’s instructions to ensure the continued airworthiness of the aircraft. The applicable vendor manuals are listed in Table 3-1. Table 3-1. Vendor Manuals Component Publication Vendor GNS 430W GNS 530W 1. 400W Series Pilot’s Guide and Reference 2. 400W Series Installation Manual 1. 500W Series Pilot’s Guide and Reference 2. 500W Series Installation Manual Garmin International 1200 E. 151 st Street Olathe, KS 66062 ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 9 3-2 Apr 30/2020 SECTION 2 AIRWORTHINESS LIMITATIONS 2-1. Airworthiness Limitations A. The Airworthiness Limitations Section is FAA approved and specifies inspections and other maintenance required under 14 CFR §§ 43.16 and 91.403 of the Federal Aviation Regulations unless an alternative program has been FAA approved. B. For EASA approval, the Airworthiness Limitations Section is approved and variations must also be approved. C. All components of the GNS 430W/530W are “on condition”. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 2 3-3 Dec 8/08 SECTION 3 SERVICING, CLEANING, TROUBLESHOOTING, AND PERIODIC INSPECTIONS 3-1. Servicing A. The 430W/530W contains no user serviceable components or assemblies. Operations involving the removal of the 430W/530W or any other line-replaceable unit (LRU) installed as a part of the 430W/530W must be done by authorized maintenance technicians. 3-2. Cleaning A. The front bezel, keypad, and display can be cleaned with a soft cotton cloth dampened with clean water. DO NOT use any chemical cleaning agents. Care should be taken to avoid scratching the surface of the display. 3-3. Troubleshooting A. If error indications are displayed on the 430W/530W, consult the Troubleshooting section contained in the applicable installation manual, listed under reference documentation in Table 3-1. 3-4. Periodic Maintenance Inspections A. The following inspection checklist is intended as a guide for 100 hour/annual inspections for aircraft operating under normal conditions. More frequent inspections may be required should adverse operating conditions be encountered. Date Signature Aircraft Registration Number Aircraft Serial Number GARMIN GNS 430W/530W GPS/WAAS NAVIGATOR INITIAL EACH ITEM AFTER ACCOMPLISHMENT Inspect the following items every 100 hours or annually INITIAL 1. Inspect the unit for security of attachment. 2. Inspect all knobs and buttons for legibility. 3. Inspect condition of wiring, routing, and attachment/clamping. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 2 3-4 Dec 8/08 3-4.1. Periodic Maintenance Inspections – Display Backlight A. The display backlight lamp is rated by the manufacturer as having a usable life of 20,000 hours. This life may be more or less than the rated time depending on operating conditions of the 430W/530W, the backlight lamp may dim and the display may not perform as well in direct sunlight conditions. The user must determine by observation when the display brightness is not suitable for its intended use. Contact the authorized repair station when the backlight lamp requires service. 3-4.2. Periodic Maintenance Inspections – Battery Replacement A. The 430W/530W has an internal keep-alive battery that will last about 10 years. The battery is used for GPS system information. Regular planned replacement is not necessary. The 430W/530W will display a ‘low battery’ message when replacement is required. Once the low battery message is displayed, the battery should be replaced within 1 to 2 months. B. If the battery is not replaced and becomes totally discharged, the 430W/530W will remain fully operational, but the GPS signal acquisition time may be increased. This acquisition time can be reduced by entering a new seed position each time the unit is powered on. There is no loss of function or accuracy of the 430W/530W unit with a dead battery. C. The battery must be replaced by a factory authorized repair station. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 2 3-5 Dec 8/08 SECTION 4 SYSTEM MAINTENANCE NOTE Removal or installation of equipment will change the aircraft empty weight and empty weight c.g. These changes will be recorded on Form F-511-5, Basic Weight and Balance Record, as required (reference Enstrom F-28F/280F Series Maintenance Manual). 4-1. GNS 430W/530W 4-1-1. Removal – GNS 430W/530W A. Turn the 430W/530W and aircraft power off. Pull the COMM GPS or COMM/NAV GPS and the COMM TX circuit breakers out. Disable the circuit breaker by installing a cable tie or other similar device around the circuit breaker system. B. To remove the 430W/530W unit from the mounting rack, insert a 3/32-inch hex drive tool into the access hole at the bottom of the unit face. Rotate the hex tool counterclockwise until the unit is forced out about 3/8 inch and can be freely pulled from the rack. C. Slide the unit out of the tray. 4-1-2. Inspection/Repair – GNS 430W/530W A. Inspect the condition and security of the mounting bracket and electrical interface. B. Inspect the condition and security of electrical cables. C. Repair procedures are not available for the 430W/530W unit. 4-1-3. Installation – GNS 430W/530W A. The 430W/530W unit is installed in the rack by sliding it straight in until it stops, about 1 inch short of the final position. Insert the hex drive tool into the access hole at the bottom of the unit face. Rotate the hex tool clockwise while pressing on the left side of the bezel until the unit is firmly seated in the rack. B. Remove the cable tie or other similar device from the COMM GPS or COMM/NAV GPS and the COMM TX circuit breaker stems and push the stem in to set the circuit breaker. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Rev. 2 3-6 Dec 8/08 4-2. Wiring Harnesses/Connectors – GNS 430W/530W 4-2-1. Removal – Wiring Harnesses/Connectors – GNS 430W/530W CAUTION Before removing or adjusting any electrical component, ensure all electrical power is off and the battery is disconnected. A. Refer to Diagram 3-1 for the 430W/530W wiring interface. B. Remove the attaching hardware, clamps, connectors, leads, or wiring. C. Identify the connectors, leads, or wiring. D. Remove the component. 4-2-2. Inspection – Wiring Harnesses/Connectors – GNS 430W/530W A. Inspect the plugs, connectors and receptacles for security, contact corrosion, damaged contacts, broken wires, faulty contacts, insert cracks, and faulty insulation. B. Inspect the leads and wiring for loose terminals, chafing, corrosion or deteriorated condition, faulty or damaged insulation, excessive mechanical stress, broken strands, damaged shielding, shorted shielding, routing and mounting conditions. 4-2-3. Repair – Wiring Harnesses/Connectors – GNS 430W/530W A. Tighten lose terminal connectors, mounting hardware, and electrical component attachments. B. Replace miscellaneous electrical components that fail to meet the inspection requirements. C. Clean corrosion from the connections and receptacles with contact cleaner. 4-2-4. Installation – Wiring Harnesses/Connectors – GNS 430W/530W A. Refer to Diagram 3-1 for the GNS 430W/530W wiring interface. B. Install the electrical component and secure with attaching hardware, clamps, or cable ties. ENSTROM F-28F/280F SERIES MAINTENANCE MANUAL SUPPLEMENT 1 Diagram 3-1. GNS 430W/530W, Sheet 1 of 1 Rev. 2, Dec 8/08 3-7/3-8 (Blank)