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3. Fault Confirmation
__________________
A. Procedure
(1) If it was necessary to do a gravity extension of the landing gear (because of the NLG door fault), do the Aircraft Configuration procedure (Ref. AMM TASK 32-33-00-720-001).
(2) Do a check of the Post Flight Report (PFR). If the are two N L/G DOOR OPEN PROX SNSR TGT POS messages related to the same NLG door, one message from LGCIU1 and the other from LGCIU2, do the fault isolation procedure in Para. 4.A.
NOTE : It can be possible that there are two sets of messages related
____ to the two NLG doors, but only one set is shown on the PFR. A check of the Last Leg Report (LLR) for LGCIU1 and LGCIU2 will show if each NLG door, or only one N L/G door, was not fully open.
4. Fault Isolation
_______________
A. Procedure
NOTE : The procedure that follows gives the information necessary to
____ identify mechanical faults related to the NLG doors.
(1) Do the detailed visual inspection of the nose landing gear doors operating mechanism (Ref. AMM TASK 32-30-00-200-001).
(2) Do a check of the nose gear door gaps and mismatches (Ref. AMM TASK 32-22-00-220-001).
(3) Do the inspection of the NLG proximity sensor and target clearances (Ref. AMM TASK 32-31-73-200-002).
(4) Do the detailed visual inspection of the NLG door uplock units and pins (Ref. AMM TASK 32-31-00-200-001).
(5) Do the visual inspection of the rotating rod of the nose gear aft door (Ref. AMM TASK 32-22-00-200-001).
(6) Correct any fault found.
(7) Do the functional test of the normal extension and retraction of the nose landing gear (Ref. AMM TASK 32-31-00-720-003).
(8) If the fault continues, the NLG doors are slow to operate or the fault continues after the subsequent flight, replace the ACTG CYL-NLG DOOR (2531GM) (Ref. AMM TASK 32-31-16-000-001) and (Ref. AMM TASK 32-31-16-400-001).
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(9) If the fault continues, replace the SAFETY VALVE-NLG DOOR OPENING (2630GM), (Ref. AMM TASK 32-31-19-000-001) and (Ref. AMM TASK 32-31-19-000-001).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : ALL ∞∞32-31-00∞∞∞∞∞∞∞∞∞∞Page A225
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CES
TASK 32-31-00-810-857
MLG Door (LH) Does Not Open Fully
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
GEAR.
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______
START A TASK ON OR NEAR:
- THE FLIGHT CONTROLS
- THE FLIGHT CONTROL SURFACES
- THE LANDING GEAR AND THE RELATED DOORS
- COMPONENTS THAT MOVE.
1. Possible Causes
_______________
- ACTG CYL-MLG DOOR, L (2523GM)
- MLG (LH) doors operating mechanism
- MLG proximity sensor and target clearances
- MLG (LH) door uplock units and pins
- MLG (LH) door forward and aft fitting
2. Job Set-up Information
______________________
A. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
AMM 32-31-00-200-001 Detailed Inspection of Gear Uplock and Door Uplock Units and Pins AMM 32-31-00-720-002 Functional Test of the Normal Extension and Retraction of the Landing Gear AMM 32-31-35-000-001 Removal of the MLG Door Actuating-Cylinder 2523GM (2522GM) AMM 32-31-35-400-001 Installation of the MLG Door Actuating-Cylinder 2523GM (2522GM) AMM 32-31-73-200-001 Inspection of the MLG Proximity Sensor and Target
Clearances AMM 32-33-00-720-001 Functional Check of Free-Fall Extension AMM 52-81-00-200-001 Detailed Visual Inspection of Main Landing Gear Door
Forward and Aft Fitting
3. Fault Confirmation
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本文鏈接地址：A320 Trouble Shooting Manual 排故手冊 起落架 LANDING GEAR 1(49)
