A320飞机维护手册 AMM 时间限制/维护检查 4(68)

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 TASK 05-51-22-200-001
 Inspection After a NLG Towing Overload or Overrun
 1. Reason for the Job__________________
R R R R R R  This inspection is necessary: - when unwanted movements have occured after the shear pin of the tow bar has broken during towing, - or when you do towbarless towing without NLG steering disconnection. This causes loads on the nose gear and its attachment structure. After the failure of a towing shear pin (during forward or rearward towing) with subsequent separation and overrun of the towbar by the aircraft: - do an inspection of the nose landing gear only. If, during push-turn operations, the towbar arm touches the tow-vehicle after failure of the turning shear pin only: - do an inspection of the nose landing gear only. Always use the correct shear pins. If the towing stops immediately after the failure of the shear pin, the inspection is not necessary. If the shear pins are incorrect (too strong), a full inspection is necewith subs before the next flight. If you do towbarless towing without NLG steering disconnection, a full inspection is necessary before the next flight.
 2. Job Set-up Information______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific No specific  warning noticesaccess platform 1.80 m (5 ft. 11 in.)

 

 B. Referenced Information

 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
05-56-00-200-001 Inspection/Check of the Leveling and Measurement
 after Abnormal Operation of the Aircraft 07-11-00-581-001 Lifting for Aircraft Maintenance Operations 32-00-00-481-001 Installation of the Safety Devices on the Landing
 Gears 32-21-11-000-002 Removal of the NLG Leg Assy (2526GM) 32-22-00-010-001 Nose Gear Doors - Ground Doors Opening 32-22-00-410-001 Nose Gear Doors - Ground Doors Closing 32-30-00-867-001 Retraction of the Landing Gear for Maintenance 32-30-00-867-002 Extension of the Landing Gear after Maintenance 32-31-22-000-001 Removal of the NLG Actuating Cylinder (2527GM) 05-51-22-991-001 Fig. 601
 3. Job Set-up
__________
 Subtask 05-51-22-481-050
 A. Safety Precautions
R (1) Make sure that the safety devices are installed on the landing gears R (Ref. TASK 32-00-00-481-001).
 (2) Put the warning notices in position to tell persons not to operate the nose landing gear.
 Subtask 05-51-22-010-050
 B. Get Access
 (1)
 Open the nose gear doors (Ref. TASK 32-22-00-010-001).

 (2)
 Put the access platform in position.

 

 4. Procedure
_________

 Subtask 05-51-22-210-051
 A. Inspection of the Fuselage (FR9 to FR20)
 (Ref. Fig. 601/TASK 05-51-22-991-001)
 (Ref. TASK 32-31-22-000-001)

 -------------------------------------------------------------------------------|ITEM|INSP| INSPECTION TASKS |PHASE|PHASE|PHASE|INSP|REF.| | |CODE| |  1  |  2  |  3  |SIGN|FIG.| |----|----|---------------------------------------|-----|-----|-----|----|----| |1. | | Nose Landing-Gear Well | | | | | | | | | (FR 9 to FR20) | | | | | | | | | | | | | | | |  A.| | Examine the attachment fittings of |  X  | | | | | | | | the drag strut assembly and the | | | | | | | | | bearings. Make sure that there are | | | | | | | | | no distortion, cracks or damaged | | | | | | | | | paint. | | | | | | | | | | | | | | | |  B.| | Examine the attachment fittings of |  X  | | | | A | | | | the lockstay assembly. Make sure that | | | | | | | | | there are no distortion, cracks or | | | | | | | | | damaged paint. | | | | | | | | | | | | | | | |  C.| | Examine the attach fittings of the |  X  | | | | B | | | | nose-gear actuating cylinder. Make | | | | | | | | | sure that there are no distortion, | | | | | | | | | cracks, pulled or torn fasteners or | | | | | | | | | damaged paint. | | | | | | | | | | | | | | | | | | If you find damage: | |  X  | | | | | | | - Remove the gear actuating cylinder. | | | | | | | | | Obey the overhaul instructions of | | | | | | | | | the manufacturer to make a strip | | | | | | | | | down inspection | | | | | | | | | (Ref. TASK 32-31-22-000-001). | | | | | | | | | | | | | | | |  D.| | Examine the attach fittings and |  X  | | | | C | | | | the side plates of the nose gear. | | | | | | | | | Make sure that there are no | | | | | | | | | distortion, cracks or damaged paint. | | | | | | | | | | | | | | | |2. | | Avionics Compartment | | | | | | | | | | | | | | | |  A.| | Examine the gear well roof, the |  X  | | | | |
　
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