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A B737-300 was dispatched in non compliance with a nose gear wheel and tire assembly installed with 1 incorrect outer bearing.
| Attributes | |
| ACN | 497329 |
| Time | |
| Date | 200101 |
| Day | Sun |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tower : cdw.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 5 |
| ASRS Report | 497329 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Qualification | technician : airframe technician : powerplant |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far |
| Independent Detector | other other : person 3 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : lighting contributing factor : schedule pressure performance deficiency : inspection performance deficiency : installation performance deficiency : repair |
| Supplementary | |
| Problem Areas | Chart Or Publication Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
An aircraft had a nosewheel change. When mechanic removed the nosewheel, he noticed it had 2 inner bearings instead of an inner and outer bearing. I had previously installed this wheel. It was changed due to wear, not due to bearing problem. These bearings are very close in size. The bearings are already installed, and I didn't notice the difference when I was installing the wheel. The mechanic at the other station installed the correct nosewheel assembly.
Original NASA ASRS Text
Title: A B737-300 WAS DISPATCHED IN NON COMPLIANCE WITH A NOSE GEAR WHEEL AND TIRE ASSEMBLY INSTALLED WITH 1 INCORRECT OUTER BEARING.
Narrative: AN ACFT HAD A NOSEWHEEL CHANGE. WHEN MECH REMOVED THE NOSEWHEEL, HE NOTICED IT HAD 2 INNER BEARINGS INSTEAD OF AN INNER AND OUTER BEARING. I HAD PREVIOUSLY INSTALLED THIS WHEEL. IT WAS CHANGED DUE TO WEAR, NOT DUE TO BEARING PROB. THESE BEARINGS ARE VERY CLOSE IN SIZE. THE BEARINGS ARE ALREADY INSTALLED, AND I DIDN'T NOTICE THE DIFFERENCE WHEN I WAS INSTALLING THE WHEEL. THE MECH AT THE OTHER STATION INSTALLED THE CORRECT NOSEWHEEL ASSEMBLY.
Data retrieved from NASA's ASRS site as of July 2007 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.