MM-I 7B-5 HELICOPTER MAINTENANCE SCHEDULE

camouflage means in compliance with the relevant manuals, regulations and instructions in force. 10. When the engines, main gear box or other units and items of equipment have been re - placed, carry out the scheduled maintenance in time limits, determined by the helicopter total fly- ing time. On newly mounted engines or units, the nearest subsequent scheduled maintenance may be conducted ahead of scheduled lime. All works on replacement of units and items of equipment should be recorded in the relevant logbooks and certificates. 11. With the purpose of ensuring trouble-free operation of the helicopter under various climatic conditions (excessive humidity, dustiness etc), and also if separate units are subject to intensive operation or if engines are replaced, it is allowed to perform out - of- schedule maintenance on all or individual helicopters (systems, units) in compliance with this M.S. The scope of works pre - scribed in this maintenance schedule should not be curtailed. 12. When the helicopter is parked, the air intakes (dust - protection devices) and exhaust branches should be blanked off with covers, while during long -term parking (storage) the power For transport version General Page 1 I I C I I F P P A MM-17B-5 MAINTENANCE SCHEDULE unit should be covered with canvas. The main rotor of the parked helicopter should be always braked. 13. Place the chocks under the wheels, blanks, clamps for the swash plate, parking brakes and main rotor brake, moor the main rotor blades irrespective of the weather. 14. Inspect the helicopter, following a strict sequence according to prescribed circuits. Lubri - cate (fill with oil) the engines, transmission units, controls, main and tail rotor hubs, swash plate, etc in terms, prescribed in the supplements. Lubrication carried out every 1 0 ' ~or every (2535) flight hours should be performed on days of preliminary preparation and during periodic inspec- tions of the helicopter. 15. If the helicopter is operated under field conditions, avoid, if possible, starting up the en - gines on sandy or dusty areas. The area for starting up the engines and performing the engine test should be selected so as to protect the intakes from dust and foreign matters, arised by air, blown up by adjacent helicopters. 16. Prior to performing the inspections and scheduled maintenance, clean external surfaces of the helicopter and its units, equipment and armament from dirt, dust, frost, snow, ice and stale grease. To prevent damage of the paint - and-varnish coating, never attempt to pull off frozen can - vas covers from the helicopter skin, main and tail rotor blades. First defreeze them with warm air from an external heater at a temperature not exceeding 60°C. 17. When replacing the engines, main gear box or other units, also in case of disconnection of the pipelines of the fuel, oil and hydraulic systems, prior to starling up the engines, initially pump through the systems to remove air blocks. 18. In case of unsuccessful start of the engine, crank it before restart. 19. When the disassembled engines and units are to be reinstalled the same helicopter, do not disturb the adjustment of eye bolts and fastening rods. 20. The engine fuel system should be filled with fuel for the whole time the engine is on the helicopter. Once the fuel system has been emptied, internal preservation not later than 24 h after the fuel has been drained is required. 21. Close at once all holes and cavities of units and pipelines opened in the course of removal with special blanks, and the plug -and-socket connectors - with p.v.c. film. Wooden blanks, paper, oakum, rags etc. are not allowed to use. When disconnecting plug -and-socket connectors of elec - tric mains inspect the jacks and pins. 22. To protect the glazing from direct sun rays, dust and dirt, cover the cabin with clean can - vas covers in parking. 23. Never flush with kerosene (gasoline) the enclosed - type ball bearings and bush-roll chain of the control system, but wipe with clean and dry cleaning rags and lubricate on the outside, ap - plying a thin layer of lubricant. 24. Carry out the works on the helicopter with sound and marked - out tools and fixtures. Prior to work and on completion of work check the tools against the list, making sure that none have been lost or left inside the helicopter. 25. Carry out the scheduled maintenance and prepare for flight with serviceable test equip- ment having test certificates. Equipment without certificate or with expired test date should not be used. 26. Do not tear off cotter pins, wire or unbend tabs of locking strips by turning nuts or bolts, since it can damage thread or unscrew the studs. Do not use locking wire or locking strips as second-hand fasteners. 27. Press grease into the joints outfitted with grease cup till stale grease is pressed out. If grease fails to pass through the joint, check the grease cup, clean it, replace if necessary. If trou- ble is not eliminated, do not use the unit or assembly. 28. Fill the hydraulic system with fresh oil not later than 48 h after used the oil has been drained. For transport version General Page 2 Mn -17B - 5 MAINTENANCE SCHEDULE - 29. When inspecting and checking the accessories, units, structural components and systems of the helicopter, pay special attention to location and elimination of such probable troubles as: - cracks, dents and other mechanical injuries of parts; - damaged and slackened locking, loose fasteners, also loose union nuts of plug - and - socket connectors; - leaks and wear of pipelines and units of fuel, oil, hydraulic, pneumatic and other systems; - improper fitting of hoses and pipelines of all systems; - damaged protective coating and corroded parts: - increased play in hinged joints; - friction or rubbing of moving parts against other parts and components of the helicopter structure; - slackened rivets; - untight fitting and loose fastening of covers, access doors, cowlings and fairings; - defective attachment of pipelines and wire bunches; damaged bonding. For transport version General Page 314 1 1 II\/ a ~ m n i MLI-17B-5 MAINTENANCE SCHEDULE SAFETY PRECAUTIONS 1. The helicopter equipment may be operated by personnel, who have studied the safety en - gineering rules and are certified for the maintenance. 2. Prior to carrying out the inspections and scheduled maintenance, ensure the safety for the personnel against static electricity discharge, spontaneous switching-on of the electrical equip - ment, fire and injuries. For this purpose: - place chocks under the helicopter wheels, - ground the helicopter; - set all automatic circuit breakers and energy consumers to OFF position, - apply brakes to the main rotor. 3. When power supply sources are connected to the helicopter, hang out the poster " HELICOPTER ENERGIZED! " The sources may be connected to the airborne mains only by permission of the flight technician, and during the period of scheduled maintenance - by the main - tenance superintendent. 4. On completion of scheduled or erection works make sure that all the systems are leak -tight, running the engines in idling, then check the engines in higher power ratings. 5. When the engines are running, nobody should stay in the engines and gear box compart - ments, as well as within the tail rotor area. 6. When the power unit is inspected after the engines shut down, exercise care to avoid burns caused by touching the hot parts. 7. Never carry out maintenance on suspended engine. Use a special cart from the ground equipment set to carry out works on disassembled engine. 8. Check that portable electric lamps used for inspection of the helicopter are intact, spark- proof, have protective nets. 9. Check that hydraulic hoists and cranes are serviceable. NEVER use faulty hoisting devices. 10. Inflate the landing gear tyres using a special reducer with pressure gauge, precluding ex- cessive air pressure liable to destroy the tyre and injure the personnel. 11. When operating the avionics and helicopter equipment follow safety precautions to pre - clude short-circuiting, shocks of high -voltage current and spontaneous switching - on of the equip- ment. 12. During maintenance on the helicopter, DO NOT: - touch the helicopter after taxiing it to the parking area, when no grounding is connected; - lean the step- ladders and other airfield equipment, which are not lined with soft material, to the helicopter skin; - keep free ends of wiring non - insulated; - leave open electric switch panel of function boxes and terminal panels energized; - carry out wiring, demounting works in electric circuits when the helicopter is energized: - open dischargers of ignition unit CK -22-2K; - apply on the valves of oxygen bottles any grease; - carry out any works on the oxygen equipment with oily hands and tools with traces of oil and fat. 13. Prior to starting and test on the engines check for availability of fire -extinguishing means and chocks for the wheels, also, for proper arrangement of airfield ground equipment at the park - ing area and absence of foreign objects around the helicopter. Engine start and test may be per- formed by the pilot only in the presence of the crew. The crew, performing the engine test should not leave the cabin when the engines are running. 14. Prior to starting up, opening and closing the cargo compartment, cranking the main rotor blades, give warning commands and make sure there are no people and foreign objects in the vicinity of blades and rotating parts. The orders should be given to the crew and personnel near and inside the helicopter. The works may be done only after reports are accepted. 15. DO NOT repair (disassemble) systems under pressure. 16. When operating with oil 6 - 3B observe the following safety rules: - avoid getting of oil on painted surfaces of units and mechanisms, rubber parts, wiring etc. If oil gets on these parts, wipe it off immediately, making use of cloth soaked in gasoline or kerosene; For transport version Safety precautions Page 1 I,. I . . n ' O P P 1 - on completion of maintenance wash your hands with water and soap, especially before meal; - do not mix oil 6 - 3B with mineral oils; - DO NOT use the cans with contained mineral oils before. 17. When carrying out the maintenance on aerial - delivery equipment, strictly follow safety rules, excluding unintentional shots, firing of pyrotechnical means, release of cargoes. 18. When operating with the pyrotechnical means, DO NOT: - expose squibs to mechanical actions (shocking, dropping, puncturing); - use faulty or uncertified instruments for squibs test; - disassemble the squibs; - allow stray persons to be at the working station; - smoke and use fire, place heating appliances and highly inflammable substances near the test area. 19. Before starting work on units and systems containing pyrotechnical devices and in the course of the helicopter service, unload them. Hand over the devices for storage in the accepted procedure. 20. In all cases when helicopter is on the ground the safety cap with red warning flag should be fitted on ACJl-4OT detector vibrator. Remove the protective casing before the flight, inspection and functional check of the detector and install the casing after flight, inspection and functional check of the detector. 21. When replacing the CK -22 -2K ignition unit due to breakdown or expiration of life time of the CK -22 -2K ignition unit discharger with a radio -active radiation source, send them to the manu - facturer or to a specialized organization with compiling the respective statement. The CK- 22-2K ignition unit discharger with a radioactive radiation source is not subject to destruction and burial- at the unit. For transport version Safety precautions Page 2 MU-17B-5 MAINTENANCE SCHEDULE PREPARATION FOR FLIGHTS The inspection route in the helicopter is shown in Fig. 1. 1 - engine compartment; 2 - gearbox compartment; 3 - swash plate and main rotor hub; 4 - tail compartment; 5 - main rotor blades; 6 - cockpit 7 - cargo cabin; 8 - radio compartment, tail boom and pylon; 9 - fuselage nose section; 10 - fuselage starboard; 11 - tail boom, stabilizer (starboard) and tail bumper; 12 - pylon; 13 - tail rotor; 14 - tail boom and stabilizer (portside), cargo ramp; 15 - fuselage port side. Fig. 1 Helicopter Inspection Route ( -e ~ t e r n a linspection, --- internal inspection) Sign "+" stands for operations to be performed. The operations of items marked with an aster - isk can be omitted when preparing for urgent sortie. Task cards with "CMM" designation should be found in Component Maintenance Manuals (CMM). MS item 1. 2. Description of operations Preliminary Operations Take over the helicopter from the person on duty on the parking site, check the condition of lead seals and without removing the latter make sure there are no external damages Check the chocks installation, the helicopter grounding and Pitot tubes covering. .- E.-- + + 3. 4. 5. Preparation for flights Page 1 I , .I,, c113nnq --- + + + Kinds of + + Remove canvas cover from the helicopter. Remove the stoppers. Open the cowl- ings and covers of maintenance access doors. Note. Stoppers from engines intake ducts, covers from dust-protection devices should be removed only before engines starting and for a time of engines intake ducts and dust- protection devices inspection. Prepare the ground servicing means, tools, accessories and test equipment necessary for the inspection Clean the helicopter of dust, dirt, while in winter - of snow, ice, frost CAUTION. IN CASE OF ICING OR AT SNOW - FALL REMOVE ICE AND FROST FROM THE FUSELAGE SURFACE, TAlL BOOM AND PYLON, MAlN AND TAlL ROTORS, FOR REMOVING ICE OR THAWING OUT THE CANVAS COVERS OF THE MAlN AND TAlL ROTORS USE HOT AIR AT A TEMPERATURE NOT EXCEEDING 60°C + + + - + + + preparation - I .-m G i??E+Z 5 g g " m z ' L a 2 : ; - - - m w m - 6j - + + K .--wnm c.- 2 + + MH-17B-5 MAINTENANCE SCHEDULE Description of operations 6. 7. 8. lthe swash plate. Open the engine and main gearbox cowling panels, hinge out the engine efflux shield (EES) beforehand (when it is installed on the helicopter). Drain condensate from the pneumatic system settling filter Disconnect main rotor blades mooring lines; remove the weather clamps from 1 7 - - 7 15. :079.10.00 a) 16. ~079.10.00b) 17. [071.10.00 b) 18. (071.20.00 a) 19*. (065.40.00 a) 20*. (072.00.00) Task Card 602. (079.20.00a) j026.20.00a) 21. (049.10.00a) 22. (071.00.00 a) 23*. 24*. (072.00.00 Task Card 601 CMM) 25. Preparation for flights Page 2 9. I ~ a k esure that all automatic circuit breakers, power sources and loads are/ + 1 + I + 1 + / + 201 CMM) 26. (072.00.00 Task Card 603 CMM) + logbook. Note. If the helicopter is accepted to the inspection site with operating engines, while stop- ping them make sure there are no foreign noises. Before the pressure in the hydraulic system has dropped check charging of the hydraulic accumulators by displacing the control members and following the pressure gauge readings Inspections and Checks during for Flight Preparation Inspect and check (see Fig.1): Engine Compartment Oil level in oil tanks of TB3-117BM engines Oil tanks, making sure they are intact, reliably fastened and leak - tight Panels of engine compartment cowling and locks, making sure of good condition, absence of mechanical damages and loose rivets Units of TB3-117BM engines fastening to helicopter, rear support to main gear box, making sure of intact locking, reliable fastening, absence of mechanical damages and corrosion, oil leak from the spherical support Control cable and revolutions reset units of TB3-117BM engines, making sure of absence of mechanical damages, reliable fastening of wire cables and their lock- ing Pipelines and hoses of fuel, oil and fire- protection systems; make sure they are leak - tight, reliably fastened and the locking is intact. Check cleanliness of holes in fire- extinguishing manifolds. Air ducts of start system of TB3-117BM engines; make sure they are intact and reliably fastened Air discharge branches from bleed valves of engines TB3-117BM Engine compartment; make sure there are no foreign objects, dust and dirt Engines TB3-117BM for absence of mechanical damages, damaged anti - corrosion coatings and corrosion ICasings of combustion chambers for cracks, overheating spots and bulging Units of TB3-117BM engines and their fastening, rocking them by hand + - + + + + + - - - + - - - + - + A I + - - + + + + + + + + + + + - + + - - - + + + + + - + - - - + + + - + + + + - + + + + - - - - - + + + + MM-17B-5 MAINTENANCE SCHEDULE I / Kinds of preparation I MS item Description of operations 27. (072.00.00 Task Card 601 CMM) 28*. (072.30.00 Task Card 201 CMM) 29. (078.11.OO a) 30. (072.58.00 Task Card 201 CMM) 31. (071.60.00 a) 32. (071.60.00 b) (078.10.00a, ltheir locking i + l + l - l f l + l Reliable fastening and locking of cotter pins on engines where accessible Position of pointers of compressors guide vanes dials, which should be set at 27 to 28.5" Inspect the EES, make sure of its good condition and reliable fastening Exhaust branches and free turbines within reach for absence of cracks, scores, corrosion, overheating. Dust-protection device including removal of fairing; make sure of cleanliness of intake ducts and separators, absence of foreign objects, loose rivets, mechanical damages, abrasion wear and oil leak from the first supports of TB3-117BM en- 33. (072.00.00 Task card 305 CMM) 34. gines Dust-protection device excluding removal of fairing; make sure there are no for - eign objects, mechanical damages and loose rivets I - + + + - Rotation of: - gas generator rotor - free turbine rotor Attachments of exhaust pipes of TB3-117BM engines, tightening of bolts and 078.10.00b) 35. (148.10.00 b) I + I - - - - + - + - + + 36. (071.10.00 a) 37. (084.10.00 b) 38. (084.11.00 a) - Fan unit, make sure of: - absence of damages of cowling covers, intake duct and fan cone; - proper mounting and good condition of guide blades; - absence of foreign objects in the intake duct and closing of universal joint shaft access door cover. Gear Box 39*. (079.20. OOb) Preparation for flights Page 3 I . ,I,, n i - n n ~ + + - - - + - + - - + + - - + + + + - + + - Compartment Covers of gear box compartment cowling, parts of locking system of cowlings in the closed position; condition of hinge assemblies Gear box fastening to gearbox mounting frame, and mounting frame fastening to the fuselage Gearbox mounting frame: - visually make sure there are no cracks and corrosion - - - using four - or seven - power magnifying glass, illumination from portable lamp and mirror (in places inconvenient for inspection) Air - and oil - coolers and pipelines of engines and main gearbox lubrication sys - tem; make sure of reliable fastening, absence of oil leaks through cells, shells - + + 40. (084.10.00e) 41. (084.10.00e CMM) 42. (084.10.00 c + + + - + Gearbox BP-14, fastening flanges to under- gearbox frame, sump and covers of drives for absence of cracks and corrosion. Gear box lubrication system: make sure of leak- tightness of oil filter covers, n-1 chip-detectors; leak - tightness and locking of points of connections of pipelines and hoses Oil level in gearbox by oil level gauge. Refill, if required. - - + - - - + + - - - + - - + + + - - + - : - + - - + + + - - - + + - - + - + + + + + + + + + MH-17B-5 MAINTENANCE SCHEDULE 1 Kinds of preparation I Description of operations i.20.00 a)/sure gauge in accordance with ambient air temperature .-. -. ~ 1 + 1 + 1 + 1 - 1 + 1 CMM I 44. (units,pipelines, atomizing rings of fire -extinguishing system (026.20.00a) 45. (065.40.006) 46'. (065.40.00E) 47. (065.40.01 E ) 48. 1 (065.40.00a) \absence of plays and mechanics1 damages, security of attachment and locking/ + I - I - I + / + / L Hydraulic actuators fastening bracket; make sure that bracket is free from dam- ages. Inspect the suspected places using seven - power magnifying glass. Pay special attention to areas of bosses of hydraulic actuators supports fastening. (065.40.00 1) /fastened and free of mecharkal damages L Note. The operation should be performed when bracket operating time is 3000 hours or greater. Hydraulic actuators; make sure that they are leak - tight and reliably fastened and there are no mechanical damages. Smooth travel of rods of hydraulic actuators to ensure full stroke of handles and control pedals with hydraulic systems switched on Parts of tail rotor itch limit svstem CflW-52 and make sure that thev are reliablv + 49*. i~elicopterand engines control pull rods, rockers and brackets; make sure of1 1 1 1 1 . + 50. (065.40.00f) + - - 51. (148.10.00 a) 52". (029.10.00 a) (028.20.00a\ - of parts. Sector and wire cable of tail rotor control, make sure their fastening, locking of parts and fixing of wire cables are reliable. Check for absence of mechanical (036.10.00b) 53. (065.40.00 g ) + + damages Air cooling system of units, make sure that fastening and locking of parts are reliable Condition, fastening and leak -tightness of units, pipelines and hoses of hydraulic, fuel and pneumatic system 54. (065.10.00 d) 55. leakage. Oil levei after flying day should be: - 60 mm in flapping hinge (20 mm less than filling) - 55 mm in drag hinge (20 mm less than filling) 7 - - - - 7 - + Main rotor brake, making sure it is in good repair and reliably fastened Swash Plate and Main Rotor Hub (065.10.00a) (065.50.00a) 1- 35 mm in feathering hinge (15 mm less than filling) Iln case of oil consumption during flying day exceeds rated value, send hub fo + - + + - - - + Oil level in expansion tank of hydraulic dampers. Swash plate and hub housing; make sure of absence of corrosion, cracks on parts and assemblies, as well as intact locking and leak- tightness of bearings. In case of oil leak from main rotor hub bearings, check their filling and add necessary: - flapping hinge - up to 30 to 40 mm level; - drag hinge - up to 25 to 35 mm level' - feathering hinge - up to 15 to 20 mm level. Check oil with hinge cooled. On completion of flying day check again oil level to determine quantity of repair. If leakage is less than mentioned above add oil. On main rotor hubs, having pressure compensators in flapping, drag and feather - ing hinges, oil should be filled (refilled) up to the level of: - 30 to 35 mm by dip stick (8191 1M-02) - for flapping and drag hinges, or (8AT.1250.098 with vibration absorber being installed); - in feathering hinge oil level should coincide with inner butt of hole for plug of feathering hinge housing (checked visually) Preparation for flights Page 4 - - + + - + + + + - - + + - + + + + + + + - + MM-175-5 MAINTENANCE SCHEDULE Kinds of preparation i l l / MS item Description of operations i.1) 65*. (030.41.00a) items 1,2,3 66. (026.20.00 a) 67*. (049.10.00 a) 68. 6.2.3 (2) CMM 69. (049.80.00 a) (049.10.00a) 70. (065.10.00 i) 71. (065.10.001) 72. (065.10.00 k) 73. (065.10.00 j) Page 5 1 I , . n'qnn4 Reliable fastening of alcohol tank, its filling, leak-tightness, cleanliness of drain holes in filler neck plug and intactness of its locking. Fire - extinguishing system pipelines; make sure they are reliably fastened and drain holes are clean Auxiliary power unit AM- 96; make sure its reliable fastening to the fuselage, as well as the attachment of units, pipelines of fuel and lubrication systems to it are reliable Oil level in the oil tank of AM-96 auxiliary power unit should be between marks "ADD" and "FULL " on the vertical bar of oil tank sight glass Air intake, exhaust pipe attachment, air bleed branches; make sure they are re- liably fastened and free of mechanical damages Main Rotor Blades Pressure in spars of main rotor blades visually by indicators of spar damage Minimum operational pressure of spars damage indicators of main rotor blades Lugs of root end pieces and tightening of tail fairings of main rotor blades; make sure that there are no cracks and mechanical damages and that the screws are reliably fastened Surfaces of spars, tail sections, end fairings of main rotor blades; make sure there are no: - damages of paint coating, punctures, cracks and dents; - burns of anti - icing system sections, mechanical damages of edge tippings and rubber straps of nose spar; - bulging and unglueing of skin in the area of its glueing to honeycomb filler, ribs, spars and tail stringers; - cracking and spalling out of sealing compound in tail section -to- spar joints; - deformation of rear edges of tail sections. + + - + + + I + + + - - - - - Preparation + + + + + + + flights I + - - - + + + + + + + + + + - + + + + + + + - - + - - + + - - - + - - + + + + - - + + - for ME-17B-5 MAINTENANCE SCHEDULE MS item Description of operations 74. (052.20.00 b) 75'. 1(052.20.00 a)lglazing, mounting and locking of emerge;lcy release handles, cohdition of seal-/ + / + / - I - / + / (025.10.00 a) 76*. (025.10.00 a) 7 7 . Cockpit Cover of engines access hatch; make sure there are no mechanical damages; the lock operates reliably and sealing rubber is intact Pilots' and flight engineer seats; make sure that they move easy and are reliably locked, fastening belts are available and are reliably locked Instrument flight blinds, make sure they are intact (during instrument flight) - - - - - - Slide blisters: make sure t h e ~slide easv and are locked reliablv. Condition of 78*. (030.41.00a) items 5,6,7 79'. (056.10.00 a) 80. (056.10.00 b) 81. 1 84. l~erviceabilityof cockpit windshields washing system and its leak - tightness / 1 , 1 I I , I + (053.60.00a) 82. (029.1 0.OOf) 83. (052.30.00f) + + . ing State of fastening and leak - tightness of windshield washing system units (shut- off valves, non-return valve, drain valve) and pipelines; make sure of absence of mechanical damages and contact with other parts. Cockpit glazing; make sure that the glasses are clean and free of mechanical damages Canopy frame sections, clamping facings and rubber seals; make sure there are no mechanical damages and that the sealing is reliable Armoured plates; make sure of reliable fastening of armoured plates. + A Serviceability of hydraulic system when operating from ground hydraulic unit Serviceability of cargo ramp hydraulic system and its leak -tightness (030.41.OOc) 85. (065.40.00a) 86. (032.20.00a (071.60.00~)1 I 90. loperation of hvdraulic stor, in the helicopter lonaitudinal control \ l l l l , s z - r , + + + , - - - , . . - - - + + + - - - i.3) 87. (065.40.00b) 88. (028.20.00 h) 89. (065.40.00 c) 91. /Refueling of helicopter by fuel gauge I I I I I I / L / A - Helicopter control from pilot and copilot seats; make sure that smooth control is ensured over full stroke of handles and pedals, collective pitchlthrottle control lever and separate control of engines, control levers of engine shut down and main rotor brake lever Leak- tightness of main landing gear shock strut filler (open the hatch cover in the cockpit floor beforehand) - + + - Serviceability of tail rotor pitch limit system (with the hydraulic system operating) Serviceability of fuel bypass valve and external tanks cross- feed valves Serviceability of Mn-100M mechanism in the engine reset system and operation of dust - protection device in the dust cleaning mode + + 7 , - - (028.40.00 d) 92. (036.10.00 c) 93*. (036.10.00 d) 94. (065.40.00 e) (065.40.00a) Preparation for flights Page 6 + I , - + - A - - - A + - - 95. (052.10.00 a) (056.30.00a) (056.21.00a) , Charging of helicopter pneumatic system by pressure gauge Air- tightness of wheel brake pneumatic system Cargo Cabin Condition of pull rods, rockers and roller guides of helicopter control system, making sure there are no plays and mechanical damages. Check for locking intactness and clearance of 0.1 to 0.4 mm between rollers and pull rods (with removed housing cover on frame No.5H web and upper skin on the cargo cabin - - - + ceiling) Sliding doors of cargo cabin entrance, making sure of tight closing, lock mecha - nisms operation, good condition of emergency release mechanism handle and its reliable locking, state of glazing, black- out blind and its locking in the open position. + + + + - - - - - + + + - - + + - + - + r s T r f i + + + + + + + - - + - - + MM-17B - 5 MAINTENANCE SCHEDULE Preparation for flights Page 7 I,,I,, o17nni MS item 96. (052.30.00a) (056.21.OO b) 98. (025.21.00 a) 99. (021.40.00 a) 100. Description of operations State of attach fittings of cargo ramp inside the fuselage 9 7 . u T : T r T opened position Furnishing equipment, making sure of good condition and reliable fastening of finishing panels, black - out blinds on windows and their fixing in the opened posi - tion, hooks for crew's clothes Operation of flap control of KO- 50 heater FROM ATMOSPHERE, FROM CABIN AMT-10 oil level in the ramp hydraulic system tank z.- .-- + + 101. (028.20.00 a) (029.10.00 a) (052.30.00e) (036.10.00 b) 102. (030.41.00a) items 4,5 103. (025.60.00 a) 104. (026.20.00 b) 105. (052.20.00 c) 106. (028.10.00~) (028.1 0.00~) 107. (052.50.00 a) 108. (053.30.00 a) (053.1 0.00a) 109. (084.40.00 a) (084.40.00 b) 110. (065.40.00 9 111. (065.40.00 f) 112. (055.10.00 b) 113. (053.1 0.00a) 114. (053.30.00 a) (053.60.00a) 115. (056.10.00b) + + + - - - - Kinds of =, - Condition and fastening of units, pipelines and hoses of fuel, hydraulic (ramp and helicopter control) and pneumatic system Condition and fastening of alcohol pump 7038, pipelines; make sure of absence of mechanical damages and contact with the other parts. Condition and fastening of emergency axe and handle lead- seal Airborne portable fire extinguishers OY- 2, making sure of locking and valve lead - seal Hatch cover for access to external load sling cable, making sure of tight closing and tixing in the closed position, absence of mechanical damages Auxiliary fuel tanks (upper and lower), making sure of their leak- tightness and absence of mechanical damages of skin of beds and upper auxiliary fuel tanks frames Entrance door to the cockpit, making sure of tight fitting and locking of the door in the closed and opened positions. Condition of attachment hinges, lock operation and door glazing Radio compartment, Tail Boom and Pylon (from inside) Covering and parts of tail boom reinforcement; make sure there are no mechanical damages and loosen rivets Tail rotor drive shaft: make sure there are no twisting along the straight line painted on tubes of s h a h , loosening of nuts of taper bolts, mechanical damages and corrosion on transmission shaft, displacement of rubber races of supports bearings, leaks of lubricant, turning of protecting washers Tail rotor control cables tension. Note. The operation per item 110 is performed when shifting to winter and summer opera- tion. Tail rotor control cable laying, making sure there are no abrupt sagging, cocking, jagging, broken strands, reduction of diameter, stretching out of wire cable from end - piece, corrosion on wire cable. Reliable fastening of all elements of the ca- ble laying Stabilizer from inside of the tail boom, making sure of proper fastening of jointing fittings and flanges, absence of cracks and lost rivets. Condition of hinge assem- blies of stabilizer and bearings Jointing bolts of tail boom with fuselage and pylon. Fuselage Nose Section Skin of the fuselage nose section, making sure there are no cracks and punc- tures, dents and corrosion, loose or broken rivets. External condition and absence of damages on the nose section fairing, tight - ness and security of its closed position, as well as cleanliness of its drain hole. Frame, clamping lining and glass rubber sealing sections. + - - - + + + - - + + + - - + - - - - + - - - + - - - - - - - + + + - - + + - - - + + + + + + + - -.c .-m c= ; g g g a z ; z z ; + + - - + - - - - + + + - - + ----- - - + - - - - + + + + + + + preparation - - u c z a , a + e - C .-w a, aV)C .- + MM-17B-5 MAINTENANCE SCHEDULE Description of operations Preparation for flights Page 8 MH-17B-5 MAINTENANCE SCHEDULE Description of operations Preparation for flights Page 9 I, I , , n'qnnl M~-17B-5 MAINTENANCE SCHEDULE Description of operations Oil level in tail gear box MS item 143. (084.20.00 c) - -Remove, inspect, clean and reinstall the n C - I plug - detectors of the intermediate and tail gear boxes 149*. (065.20.00 b) 150*. (065.20.00 c) 151. (065.20.00 k) 152. 053.30.00 a) 153*. Kinds of preparation 1 (055.10.00 a; 1 I I I l I I Proper locking of all nuts and bolts Oil level in hub feathering hinges by the check cups Operation of tail rotor hub hinges Lugs of blades end -pieces and housings of hub feathering hinges for cracks and corrosion Tail Boom and Stabilizer (Port Side) Tail boom and stabilizer in similar way as in items 135,136 Cargo Ramp Make sure of absence of cracks. punctures, dents and corrosion of skin, looser (052.30.00a) 154. (072.00.00 ments of "Flight Manual" ind "Service ~ a n u a lof T B ~ - 117BM Engine" t.c. 506 2 .- and broken rivets of ramp and o i e r assemblies of its hinging. Fuselage Port Side Fuselage port side in similar way as in items 95, 122, 123, 126, 127, 128, 129 (036.10.00b) 155*. (052.60.00 a) 156. + Entrance ramp and its serviceability, reliable locking in the operating and stowed + positions Start, Warming up and Test of Engines Perform the start, warming up and testing of the engines in compliance with require- Preparation for flights Page 10 E .-~n =- &!%!KC" 2 E . C " " Q - = a + z2 2 m o o a a c c a m ----- - - - - + CMM) 157. 1 (029.1 0.00d) _ -.F Check charging of hydraulic accumulators with nitrogen affer the engines shutdown. c .-+ a,a c.- -0 3 + + + + + + + - - + - - - + + - - - MH-17B-5 MAINTENANCE SCHEDULE Description of operations Preparation for flights Page 1111 2 - - - - MM-17B - 5 MAINTENANCE SCHEDULE TECHNICAL MAINTENANCE OF HELICOPTER WITH NEWLY MOUNTED UNITS Operations performed when replacing engines, main, intermediate and tail gearboxes. MS item 1. (072.00.00) 2. 3. (072.00.00 CMM) (084.00:00) 4. (012.20.00) 5. (072.90.02 Task cards 201,202 Description of operations After First Test When the engine is shutdown during rundown, listen to foreign noise in the engine and make sure that the compressor and free turbine rotors rotate smoothly. Measure the compressor rotor "rundown" time. After the engines shutdown do not use brakes to stop the main rotor. After stopping the main rotor check by hand absence of brake drum heating. Carry out the operations in the volume of preliminary preparation 2'm 5 + - CMM) (084.10.00 g CMM) (084.10.00 i CMM) (084.20.00 c) (084.30.00 c) (073.11.04 Change oil in the engine lubrication system Remove, inspect and flush: - engine oil filter; CMM) 6. (073.12.05 task card 303 CMM) 7. (065.40.00 h) 8. (072.00.00 x0 .ifjc em E % - + + + 1 - main gear box oil filter; - nC-1 plug- detector; - fine fuel filter I + CMM) 9. (072.00.00 CMM) (084.00.00) 10. (072.90.02 task cards 201. 202 + + Bleed air from the engine fuel system Check by dials the deflection of the swash plate and make sure of the ab- sence of play in the control system Start and test the engine to check its operat~onafter maintenance operat~ons have been performed CMM) (084.10.00 g CMM) (084.10.00 CMM) (084.30.00 c) (084.20.00 c) 11. (072.00.00 Task Card 606 Technical maintenance of helicopter with newly mounted units Page 112 1 1 I I ~ Ic113nni Schedule, h - - - + + + After First Flight Carry out the inspection in the volume of preliminary preparation Remove, inspect and flush: - engine oil filter; CMM) 12. (078.10.00 b) -a, x m o a,E em = & - + + - - main gear box oil filter; - nC-1 plug-detectors; Check and adjust, if necessary, the alignment of engine and gear box x 2 2@ 2 + - + Check tightening of turnbuckle of fastening clip of engine exhaust attachment + - I - - + + + - + + + - + + - - + + + - + - + - + + + Description of operations Technical maintenance of helicopter with newly mounted units Page 2 . .. MM-17B-5 MAINTENANCE SCHEDULE MS item 13. (084.1 1.00b) 14. (065.10.00f) 15. (065.20.00d) Check tightening torque of bolts fastening the gearbox frame to the fuselage Check tightening torque of nut fastening the gearbox hub Check tightening torque of nuts of bolts fastening the tail rotor hub to tail gearbox shaft. Tighten it, if necessary. Schedule, h x n & 8= SI! - + .2m 2 - - - g c .srn E + + - .- a, $Jg 9rn 5 % - - - - MM-17B-5 MAINTENANCE SCHEDULE TECHNICAL MAINTENANCE OF HELICOPTER AFTER INITIAL 5 k 1 FLYING HOURS / M.S. item I Description of operations 1I 1. ICarry out the operations in the volume of preliminary preparation 2. \check tiqhteninq torque of bolts of tail boom and pylon fasteninq - - . . - - (053.10.00 b) Note: If there is no loosening of nuts of two adjacent bolts in the area of tail boom and pylon joint near stringers No. 2, it is allowed not to check tiqhteninq torque of bolt nut at the ioint near stringer No. 1. I ~ o radditional control of joints near stringer NO. 1 paint the nut i n d the part of the bolt. 3. l ~ h e c ktightening torque of bolts of blade pitch controls fastening and nuts of bolts of fastening the (065.10.00 e) 4. (065.10.00 f) 5. 9. Check and adjust, if necessary, the alignment of engines with main gear box (072.00.00 Task card 606 - . hydraulicdampers brackets to trunnions of feathering hinges - Check tightening of nut of the main rotor hub fastening on main gear box shaft Check tightening torque of nuts of bolts of the main rotor blades fastening to hub feathering hinges (065.20.00 e) 6. (065.20.00 d) 7. (065.40.00 h) 8. . . Check tightening torque of nuts of bolts of tail rotor hub fastening to tail gear box shaft Check by dials the deflection of the swash plate and for absence of plays in control system Inspect units and rods of fasteninq of TB3-117BM enqines CMM) 10. (072.90.02 Task cards 202. CMM) 12. I ~ e m o v e ,flush and check serviceability of CC- 78 chip detector. Inspect and flush oil filters of engines 210 CMM) 11. (084.10.00 i Inspect and flush flC-1 plug- detector of main gear box. If there are chips on flC-1 plug - detectors remove and inspect oil filter of main gear box item 9) 16. ]Check tightening of nuts of fastening the units on main gear box (079.20.00 h) 13. (084.1 1.OO b) 14. (084.1 1.OO c) 15. (084.11 .OO e (084.11.OO e) I 17. /Inspect and flush flC-1 plug-detector of intermediate gear box Check tightening torque of bolts of the gear box mounting frame fastening to fuselage Check tightening torque of bolts of the gear box bracing struts fastening to gear box feet and the articulated struts to main ones Check tightening of nuts of fastening the feet to main gear box (084.30.00 c) / 20. /Check tightening torque of nuts of the tail gear box fastening bolts (084.20.00 c) 18. (084.20.00 d) 19. Check tightening torque of nuts of bolts of fastening the intermediate gear box Inspect and flush flC-1 plug-detector of tail gear box Technical maintenance of helicopter after initial 5 i 1 flying hours Page 112 - - - . (084.30.00 d) 21. (078.10.00 b) 22. (029.10.00 0) 23. - . - Check tightening of turnbuckles of clips of the engine exhaust attachment fastening Remove, inspect and clean the filtering elements of Or-116H and 8A2.966.017-2 with the super- sonic bath Inspect visually the AMT-10 oil condition in hydraulic system. 1 MH-178-5 MAINTENANCE SCHEDULE TECHNICAL MAINTENANCE DURING STORAGE 1. The helicopter should be stored with the fuel, lubrication, hydraulic and air systems fully primed. 2. When fuel is drained the fuel system of engines should be preserved not later than 24 h af- ter draining. 3. The helicopter placed for storage should be in good repair and outfitted with standard equipment, tools and ground equipment means. 4. The following operations should be carried out on the helicopter being stored: Description of operations 20 Technical maintenance during storage Page I , , - -.. rains and logs, run blades for 1.5 to 2 h on ground or in flight to prevent accumulation of moisture in tail sections - flush blades with fresh water when parking on saline soils, then wipe them with dry cloth For storing main rotor blades removed from helicopter re- preserve them: + + + + + MR-17B-5 MAINTENANCE SCHEDULE Description of operations Technical maintenance during storage Pace 2 MM-17B-5 MAINTENANCE SCHEDULE SCHEDULED MAINTENANCE AFTER EVERY 50 :kO ,I00 '::, 200 Ti:, 300 $0, FLYING HOURS Before attending to scheduled maintenance: - check the service life left for each unit consulting the data contained in the logbook; - check fulfillment of directions orders and modifications according to bulletins of manufactur - ing plants; - carry out the operations in the volume of scheduled inspection. (72.90.02 Task Cards 201, 202 M.S. item 1. Description of works Engine TB3- 117BM Remove, inspect and flush oil filter CMM) 2. (73.11.04 Task Card 205 (73.12.05 / H P - ~ B Mfuel control unit Task Card 602 Remarks Schedule, h CMM) 1 1 I I I creased dustiness, scheduled terms are two 50 Replace filtering element of fine fuel filter /timesshorter 3. I ~ e m o v e ,inspect and flush intake air filter of1 - / + I + / + /under conditions of in- 100 + + + - + + 4. (73.12.05 Task Card 603 CMM) I I creased dustiness, scheduled terms are two thel 200 + CMM)Remove, inspect and clean air jets of HP - 3BM fuel control unit (73.12.05 Task Card 604 CMM) 6. (73.16.1 0 Task Card 205 /timesshorter + ( + /Under conditions of in- 300 + Under conditions of in- creased dustiness, the scheduled terms are two 5. I ~ e m o v e , inspect and flush fuel filters of/ - / + I + / + /under conditions of in- ! 1 Icreased dustiness, scheduled terms are two + I /timesshorter HP- 3BM fuel dontro~unit Remove, inspect and flush fuel filter of MM-3A actuating mechanism - + I + CMM) (080.12.00 Task Card 203 CMM) 8. (071 .20.00c) 9. (072.30.00 Task Cards 2Fbiy2 10. + 7. I ~ e m o v e ,inspect and flush air starter filter I - I + I + 1 + l ~ n d e r conditions of in- I (071.00.00 b) 11. (071.60.00 d) Scheduled maintenance Page I I , ,I,, niqnn4 times shorter Under conditions of in- creased dustiness, the scheduled terms are two /timesshorter Check alignment of engine with main gear box Measure wear - out of leading edges of blades of compressor rotor first stage: - with dust- protection device - with dust - protection device and wear of lead- ing edges more than 1 mm - without dust - protection device - without dust- protection device and wear -out of leading edges more than 1 mm Drain condensate from moisture trap of power 12. (071.60.00 e) 13. (073.12.05 Task card 203 synchronizing system of T B 3 - 1 1 7 B ~ e n ~ i n e Inspect separator of engine dust-protection device - + + + + Inspect swivel branch and dust removal throat of dust - protection device Bleed air from engine fuel system - + - + + + + + + - + + + + + + + - + + - + 1 + + + + + + After 200 h of operation inspect every 50 flying + creased dustiness, carry out the operations after 1 0 ~ 2flying hours After every 25 Tz flying hours + + hours MH-17B-5 MAINTENANCE SCHEDULE M.S. item 14. (072.00.00) Description of works Start up, warm and test engine After testing check leak - tightness of joints: a) oil filter; b) fine fuel filter; c) fuel filters of FCU, actuating mechanism HM3A; d) plugs of air starter oil chambers. 15. (078.10.00 b) 16. (012.20.00) (080.12.00. Task card 205 CMM) 17. (072.90.00 Task card 204 CMM) 18. (72.90.1 3 Task card 201 CMM) 19. (073.02.00 Task card 202 CMM) 20. (084.10.00 1 CMM) 21. (084.10.00 g CMM) 22. (084.11.OO b) 23. (084.11.OO c) 24. (084.11.OO e item 9) 25. (084.11.OO e item 64) 26. (084.10.00d CMM) 27. (053.10.00 a) 28. (053.40.00 c) 29. (053.10.00 b) Remarks Operations per item d on starters with inde- pendent lubrication system should be per- formed after every (250'~~.25)flying hours Schedule, h Check tightening of turnbuckle of clip of the engine exhaust attachment fastening Change oil in engine and air starter lubrication system Remove, inspect and flush protective filter in IV and V supports of oil drain pipeline Remove, inspect, flush and check actuation of CC-78 chip detector Clean ejector nozzle hole Main Gear Box Remove, inspect and flush n C - I plug- detectors Remove, inspect and flush oil filter Check tightening torque of bolts of the gear box frame fastening to fuselage Check tightening torque of bolts of fastening the bracing struts of gear box frame to gear box feet and the articulated struts to main ones Check tightening torque of nuts of fastening the feet to main gear box Check tightening of nuts of fastening the units on main gear box Change oil in lubrication system of main gear box Note. Take sample of oil from gear box for check of presence of water every two months Fuselage, Tail Boom and Pylon Inspect tail boom frame-work from inside and fastening units of the tail boom and pylon Inspect fitting and supports of tail rotor drive shaft, brackets of blocks for wire - cables of tail rotor control Check tightening torque of fastening bolts of the tail boom and pylon Note. If there is no loosening of nuts of two adjacent bolts in the area of tail boom and pylon joint near stringers No. 2, it is allowed not to check tighten- ing torque of bolt nut at the joint near stringer No. 1. For additional control of joints near stringer No. 1, paint the nut and the protruding part of the bolt 50 - - - + + + - - - - - - - - - 100 + + + + + + + + + + + 200 + + + + 300 + + + + + + + + + - + + + + + + + + + - + + + Every (250 ) h o engine operation or after 12 months ::i day: Change oil: 1. Once a year when shifting to winter opera- tion 2. With coking of more than 50 '10 of gauze surface Scheduled maintenance Page 1 2 MM-17B - 5 MAINTENANCE SCHEDULE I , I , nf-nn4 M.S. item 30. (055.10.00b) 31. (052.20.00 e) (052.10.00 b) 32. (053.10.00 g) 33. (065.10.00 e) 33a. (065.10.00 f) 34. (065.10.00 m) 35. (065.10.00 i) (065.10.00 j) (065.10.00 k) (065.10.00 1) 36. (065.10.00 n) 37. (065.10.00 0) 38. (065.10.00 t) 39. (065.20.00i) 40. (065.20.00j) 41. (065.20.00i) 42. (065.20.00 k) (065.20.00 1) 43. (065.20.00 m) (065.20.00n) 44. (065.20.00 e) Remarks When changing to summer or winter op- eration After initial 3002:, +I00 +I40 500-50 , 700-70 fly- ing hours and further on every 100 T : : h After initial 300z: , +lo0 +I40 500-50 , 700-70 fly - ing hours and further on every 100::; h After initial 300 430 , +140 500 ':"o0 , 700 -70 fly- ing hours and further on every 100 y:: h After initial 300 2: , +lo0 +140 500 -50 , 700-70 fly- ing hours and further on every 100::: h After 6 months, but at least every 100 1:; h after 400 h of operation Scheduled maintenance Page Description of works Inspect stabilizer and its fastening units from inside of tail boom Check operation of emergency release mechanism of blisterj, entrance door to cargo cabin Check condition of frame No. 10 inside the cargo cabin in the area of frame intersection with the boom along stringerj No. 11 (points of fastening of shock sbvts of main landing gear) and make sure of the absence of cracks. When armament rack adapters are installed, inspect frames No.7 and 10, longitudinal structure and fuse- lage skin in the area of armament rack adapter as- semblies fastening. Rotor System Check tightening torque of bolts of fastening the blade pitch controls and nuts of bolts of fastening the brackets of hydraulic dampers to trunnions of feathering hinges Check tightening torque of nut of fastening the main rotor hub on main gear box shaft Remove main rotor blades Inspect removed blades in the volume of pre- liminary preparation operations Check condition of glueing of main rotor blades skin by knocking. Reinstall main rotor blades on the helicopter Remove and inspect magnetic plugs and check oil condition in main rotor hub feathering hinges Tail Rotor Inspect tail rotor blades and check by knocking and by hand the condition of glueing of tail sections skin, heating straps, rubber straps and edge tippings (without removing the blades) Remove tail rotor blades Inspect removed blades and check by knocking and by hand the condition of glueing of tail sections skin, heating straps, rubber straps and edge tippings Inspect lugs of blade end-pieces and housings of feathering hinges of tail rotor hub. Reinstall the blades Measure axial play of bearing of tail rotor rod and play of shafts and blades control forks Check tightening torque of nuts of bolts of fastening the tail rotor blades to hub feathering hinges 50 - - - - - - - - - + - - - - 3 300 - + + - - - - - + + Schedule, 100 + + + h 200 + + + + + + + + + Mm-178-5 MAINTENANCE SCHEDULE M.S.item 45. (065.20.00 d) 46. (032.10.00 c) 46a. (012.20.00) Description of works Check tightening toque of nuts of bolts of fastening the tail rotor hub to tail gear box shaff 47. (032.40.00 d) (032.40.00 e) 48. (032.40.00 c) 49. (084.40.00 a) 50. (084.40.00 c) 51. [holder and bumper housings 53. \Check adjustment of transmission brake shoes 1 - 1 + / + / + 1 (084.40.00 h) 52. (084.40.00 b) Landing Gear and Tail bumper Check air gaps in microswitches AM-800K of hy- draulic stop switchingqn mechanisms in longitudi- nal control Check the nitrogen pressure in landing gear shock- absorberj and tail bumper Remove, inspect and reinstall wheels of main and nose landing gears Check brakes of wheels of main landing gear Transmission Check for twisting of the tail shaft and loose taper bolts Inspect universal- joint shaft of fan drive, check fixing of locks of needle bearings and tightening of nuts of fastening the gear box drive to flange Remove fan drive shaft and check condition of Remarks Schedule, h - - needle bearings of cardan shaft joints Inspect tail rotor drive shaft and check for ab- sence of large clearances between rubber (084.50.00 a) 54. (084.40.00 d) 55. (084.20.00 c) + - - + + (084.30.00 c) 56. (084.20.00 d) (084.30.00 d) 57. (065.40.00 e) 58. (065.40.00 f) 59. (065.40.00 g) 60. (065.40.00 i) 61. (065.40.00 h) 50 - + + - - Check for eccentricity of shaft, misalignment in joints, side clearance in splined joints: check tightening torque of bolt connections of tail shaftflanges Remove, inspect, flush and reinstall nC-I plug- detectors of intermediate and tail gear boxes 62. (065.50.00 c) 63. Scheduled maintenance Page 4 200 100 When changing to summer or winter op- + + - Check tightening torque of nuts of bolts of fas- tening the intermediate and tail gear boxes Control Inspect condition of rods, bellcranks, rockers and roller guides of helicopter control Inspect cable run of tail rotor control Inspect condition and tension of wire-cables of engine shutdown control and main rotor brake control Check adjustment of microswitch of movable stop mechanism of tail rotor pitch limit system Check serviceability of control system operated by ground hydraulic unit, marking out by dials the deflections of swash plate and for absence (065.50.00g) 64. (028.20.00 e) 300 + + I + - - of play in control system Check tightening torque of nuts of studs of the slide bracket fastening and those of studs of upper flange of swash plate fastening Measure plays in swash plate + + + - + + + + - Fuel System Inspect and check condition and fastening of pump 4636 and electromagnetic valve 610200A of KO-50 heater + + - - - + + + + + + + + eration When changing to win - ter operation When changing to win- ter operation + + + inner 750 h + + + + + + + - 1 - + + + + + + + + + + MU-17B-5 MAINTENANCE SCHEDULE (028.20.00 a) tanks fastening. Inspect and check condition, fasten- ing and tightness of units, pipelines and hoses of fuel- 1 I M.S. item 65. (028.10.00 d) Remarks --- Description of works Check fastening of service tank and tightening toque of bolts of bands of the external and auxiliary - . (028.20.00 i) /of delivery tank - 67. I ~ e o l a c e filterina element of fine fuel filter/ - 1 + I + 1 + 1 65a. (028.10.00 v) 66. Schedule, h (029.10.00 e) (ing attachmen<8~.99i0.040 69. /check leak- tightness and operation of hydraulic1 + / + I + / + I 50 - system Check tightening toque of bolts securing the frame and joint s b p s of upper auxiliary fuel tanks fastening Check operation of fuel bypass line with filling (049.10.00 d) 68. (029.10.00 f) ]system from hydraulic unit 70. I ~ e m o v e ,inspect and flush filterina elements of/ - I + / + I + / 1 100 + - - I1 ~ 0 3 0 ~ ~ of a&iliary power unit AM-9B Hydraulic System Check charaina of hvdraulic accumulators us - 1 70b. ICheck adiustment of lock microswitches I + I + I + I + / I (029.10.00 o) 70a. (052.30.00g) 200 + + - (065.40.01 q ) I 73. ILubricate bearings of hvdraulic actuators 300 + fine filters of helicopter control hyd;aulic system Check adjustment of indicator of ramp retracted position (052.30.00 h) 70c. (052.30.00 f) 71. (065.40.00 b) 72. + + + hours summer or winter op - eration + + Check cargo ramp hydraulic system for ser- viceability Inspect and check fastening of bracket of hy- draulic boosters mounting to main gear box. Make sure there are no cracks on bracket and check tightening torque of nuts of supports of hydraulic actuators Flush filtering elements of hydraulic actuators (065.40.00 v) 74. (029.10.00 f) (029.10.00 r) 74a. (012.20.00) + + - - + + - Check condition of AMT-10 oil in the helicopter control hydraulic system. Replace oil when the oil viscosity is decreased up to 8 CCT or in case of mechanical impurities in oil. Change AMT-10 oil in the ramp hydraulic sys- tern (052.30.00 i) 75. (036.10.00 f) 76. (036.10.00 e) 77. - (026.21.O1 e CMM) 78. (026.21 .Old CMM) 79. (026.20.00 f) 80. Scheduled maintenance Page 5 , , - , " f i e 4 + Pneumatic System Remove, inspect and flush filter of AK-50T1 compressor Drain condensate from pneumatic system cyl - inders Fire - extinguishing Equipment Check function of Y6W-4-4 tire extinguishers (021.40.00 a) + and pressure gauge Change fire - extinguishing compound in fire extinguishers YW6-4-4, perform operations in compliance with maintenance documents on YW 6 - 4 - 4 Check charge of fire extinguisher OY -2 by weighing Air Conditioning System Check in heater KO - 50: - - - - condition of jets of fuel box 2621 and fuel filter 774 of heater - tightness of fuel box line BYPASS FROM INJECTOR which injects kerosene under pressure of 200 to 250 kPa (2 to 2.5 kgf/crn2 ) for 5 min. - - + - - - - + + + Every 3 years k1 month Every 3 months + - + When changing to win - ter or summer operation or every 6rnonths MM-17B - 5 MAINTENANCE SCHEDULE Scheduled maintenance Paae 6 M S . item 81 (065.12.00b) 82 (065.12.00~) 83 I (065.12.00d) 84 (065.12.00e) Description of works - fuel box bypass line injecting kerosene for 10 min; - tightness of fuel box line FUEL INLET FROM PUMP which injects kerosene under pressure of 200 to 250 kPa (2 to 2.5 kgf/cm2 ) for 5 rnin; - FUEL INLET FROM PUMP fuel box line which injects kerosene for 10 min; - condition of injector, having unscrewed it from air heater; - tightness of injector joints in places of copper gaskets mounting injecting kerosene, under pressure of 200 to 250 kPa (2 to 2.5 k gf/cm2 ) for 5 min; - injector in horizontal position for leaks at nozzle end for 1 to 2 min; - injector with kerosene for 10 min; - quality of atomizing and consumption of fuel through the injector: - condition of air heater and inner cavity of combustion chamber; - tightness of joints of pipelines from injector to heater and by - pass line for 1 to 2 min; - tightness of joints of pipelines from fuel box to heater after installing the latter; - flush gauze of pressure regulator 773H; - - start and test heater manual and automatic temperature control Vibration damper Check tightening torque of nuts of bolts of vi - bration damper hub fastening to hub bracket. Inspect vibration damper hub sleeves for ab- sence of cracks. Inspect bolts fastening the hub to the bracket for external condition. Inspect parts of vibration damper bifilar sus- pensions Remarks 50 - - - - - - - - - - - - - - - - - Schedule, 100 + + + + + + + + + + + + h 200 + + + + + + + + + + + + + + + + 300 + + + + + + + + + + + + + After initial 50 flying hours when performing initial scheduled main- tenance operations at ambient air temperature drop up to minus 15°C and below.