 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Mechanic reports the nose gear left axle spacer was found missing approximately nine months after he had replaced the left nose tire on a B777.
| Attributes | |
| ACN | 817310 |
| Time | |
| Date | 200803 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Make Model Name | B777-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 817310 |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | performance deficiency : installation performance deficiency : scheduled maintenance performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
In regard to the questionable missing axle washer; on the left nose gear; I removed and replaced the left nose gear tire per the 777 boeing maintenance manual; check manual; and the procedures manual. On the work card; I misread the step and accidentally marked the block 'north/a.' the axle washer was installed and I can only speculate as to what happened to the washer after that. No damage was reported to the axle or wheel assembly. I also checked with the wheel assembly overhaul shop for reports of axle washer findings in the past 10 months and no washers were found. Mechanics at that facility have been instructed to report any washers found on the wheel assemblies or wheel assembly covers to the proper station for corrective actions required for the safety of the aircraft. I have worked on aircraft for almost 16 years and have never had any problems deviating from proper procedure or the code of federal regulations.
Original NASA ASRS Text
Title: Mechanic reports the nose gear left axle spacer was found missing approximately nine months after he had replaced the left nose tire on a B777.
Narrative: In regard to the questionable missing axle washer; on the left nose gear; I removed and replaced the left nose gear tire per the 777 Boeing Maintenance Manual; Check Manual; and the Procedures Manual. On the Work Card; I misread the step and accidentally marked the block 'N/A.' The axle washer was installed and I can only speculate as to what happened to the washer after that. No damage was reported to the axle or wheel assembly. I also checked with the wheel assembly overhaul shop for reports of axle washer findings in the past 10 months and no washers were found. Mechanics at that facility have been instructed to report any washers found on the wheel assemblies or wheel assembly covers to the proper station for corrective actions required for the safety of the aircraft. I have worked on aircraft for almost 16 years and have never had any problems deviating from proper procedure or the Code of Federal Regulations.
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.