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A technician reports the nose landing gear (nlg) aft door; aft hinge repair bushings found in their stores kits are approximately half the length of the replacement bushings they have been using in the past on their A320 aircraft during maintenance visits. The bushings were part of an airbus service bulletin to address nose vibrations on takeoff rotations.
| Attributes | |
| ACN | 1001400 |
| Time | |
| Date | 201203 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Nose Gear Door |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Powerplant Maintenance Airframe |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy |
Narrative:
Nose landing gear (nlg) aft door. Aft hinge repair bushings part number (P/north) XXX-1. These flanged bushings are part of a repair for worn hinges (oversized). The problem is this P/north XXX-1; I believe; are not manufactured (mfg'd) correctly; compared to the others we have had in the past. These bushings are approximately half the length of the others. If you look at page 4 of 4; of the airbus supplement to the aircraft maintenance manual (amm) 52-003; it does not show what the length should be for the flanged bushing; but the non-flanged bushing shows a typical length of .155' to .160' of an inch. In my opinion the flanged bushing should be .155' to .160' of an inch; plus the flanged dimension of .078' to .080' of an inch. Most of the bushings are found in [stores] kit XXX [parts bin] for the maintenance base; since this is a common repair at every [C-check] visit.
Original NASA ASRS Text
Title: A Technician reports the Nose Landing Gear (NLG) Aft Door; Aft Hinge Repair Bushings found in their Stores Kits are approximately half the length of the replacement bushings they have been using in the past on their A320 aircraft during Maintenance Visits. The bushings were part of an Airbus Service Bulletin to address nose vibrations on takeoff rotations.
Narrative: Nose Landing Gear (NLG) AFT Door. AFT Hinge Repair Bushings Part Number (P/N) XXX-1. These flanged bushings are part of a repair for worn hinges (Oversized). The problem is this P/N XXX-1; I believe; are not Manufactured (MFG'd) correctly; compared to the others we have had in the past. These bushings are approximately half the length of the others. If you look at Page 4 of 4; of the Airbus Supplement to the Aircraft Maintenance Manual (AMM) 52-003; it does not show what the length should be for the Flanged bushing; but the non-flanged bushing shows a typical length of .155' to .160' of an inch. In my opinion the flanged bushing should be .155' to .160' of an inch; plus the flanged dimension of .078' to .080' of an inch. Most of the bushings are found in [Stores] Kit XXX [Parts Bin] for the Maintenance Base; since this is a common repair at every [C-Check] visit.
Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.