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B737-700 maintenance technician reported that after replacing the tire they realized a washer was not installed.
| Attributes | |
| ACN | 1580165 |
| Time | |
| Date | 201809 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Main Gear Wheel |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Maintenance Deviation - Procedural Published Material / Policy |
Narrative:
I was sent to aircraft to perform an [inspection] with another mechanic (name) and found the #4 main landing gear tire worn beyond limits; along with a low O2 bottle. The plane had an outbound flight soon after we arrived so we had very little time to perform our check. We serviced the crew O2 bottle and changed the tire and signed the logbook off in reference to the amm task. I had no idea that the washer (item 15 in reference to amm 32-xx-xx-XXX-XXX) was not installed with the axle nut. No abnormalities were present to show that the washer was missing; the safeties were installed like normal and hub cap installed.
Original NASA ASRS Text
Title: B737-700 Maintenance Technician reported that after replacing the tire they realized a washer was not installed.
Narrative: I was sent to aircraft to perform an [inspection] with another mechanic (Name) and found the #4 Main Landing Gear Tire worn beyond limits; along with a low O2 bottle. The plane had an outbound flight soon after we arrived so we had very little time to perform our check. We serviced the Crew O2 bottle and changed the tire and signed the logbook off in reference to the AMM task. I had no idea that the Washer (Item 15 in reference to AMM 32-XX-XX-XXX-XXX) was not installed with the axle nut. No abnormalities were present to show that the washer was missing; the safeties were installed like normal and hub cap installed.
Data retrieved from NASA's ASRS site 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.