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Mechanic describes the chain of events that led to a nose gear pin not being removed prior to dispatch; on an A320; resulting in an air turnback.
| Attributes | |
| ACN | 807437 |
| Time | |
| Date | 200810 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 807437 |
| Events | |
| Anomaly | maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : briefing performance deficiency : inspection performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Aircraft X came to hangar for bird strike boroscope. During this check; inspector noticed hydraulic leakage at r-hand main landing gear. We proceeded to isolate leak by tightening b-nuts. Precautionary; we pinned all 3 gear. After stopping leak and cleaning area; aircraft was routed for flight. Both main gear pins were removed but I did not notice the nose pin still installed; and closed nose gear doors. This resulted in aircraft returning to field.
Original NASA ASRS Text
Title: MECHANIC DESCRIBES THE CHAIN OF EVENTS THAT LED TO A NOSE GEAR PIN NOT BEING REMOVED PRIOR TO DISPATCH; ON AN A320; RESULTING IN AN AIR TURNBACK.
Narrative: ACFT X CAME TO HANGAR FOR BIRD STRIKE BOROSCOPE. DURING THIS CHK; INSPECTOR NOTICED HYD LEAKAGE AT R-HAND MAIN LNDG GEAR. WE PROCEEDED TO ISOLATE LEAK BY TIGHTENING B-NUTS. PRECAUTIONARY; WE PINNED ALL 3 GEAR. AFTER STOPPING LEAK AND CLEANING AREA; ACFT WAS ROUTED FOR FLT. BOTH MAIN GEAR PINS WERE REMOVED BUT I DID NOT NOTICE THE NOSE PIN STILL INSTALLED; AND CLOSED NOSE GEAR DOORS. THIS RESULTED IN ACFT RETURNING TO FIELD.
Data retrieved from NASA's ASRS site as of May 2009 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.