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A B767-300 was dispatched in non compliance with #1 tire and wheel assembly replaced but omitting the spacer between the inner bearing and brake.
| Attributes | |
| ACN | 459134 |
| Time | |
| Date | 199912 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | FO |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 459134 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 459135 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : non compliance with legal requirements performance deficiency : installation performance deficiency : repair |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
While preparing wheel for shipment on dec/sat/99, found spacer stuck to inner bearing of #1 wheel removed from aircraft xyz on dec/fri/99. Assume aircraft xyz left ZZZ without inner spacer installed. Wheel nut torque was found normal during installation as per maintenance manual 32-45-01 1412. During installation of wheel #1 on aircraft xyz, I omitted to check the spacer between the inner wheel bearing and the brake unit. This spacer was stuck on the removed wheel and subsequently not installed. During the following trip the wheel bearings failed and damaged the wheel assembly and axle.
Original NASA ASRS Text
Title: A B767-300 WAS DISPATCHED IN NON COMPLIANCE WITH #1 TIRE AND WHEEL ASSEMBLY REPLACED BUT OMITTING THE SPACER BTWN THE INNER BEARING AND BRAKE.
Narrative: WHILE PREPARING WHEEL FOR SHIPMENT ON DEC/SAT/99, FOUND SPACER STUCK TO INNER BEARING OF #1 WHEEL REMOVED FROM ACFT XYZ ON DEC/FRI/99. ASSUME ACFT XYZ LEFT ZZZ WITHOUT INNER SPACER INSTALLED. WHEEL NUT TORQUE WAS FOUND NORMAL DURING INSTALLATION AS PER MAINT MANUAL 32-45-01 1412. DURING INSTALLATION OF WHEEL #1 ON ACFT XYZ, I OMITTED TO CHK THE SPACER BTWN THE INNER WHEEL BEARING AND THE BRAKE UNIT. THIS SPACER WAS STUCK ON THE REMOVED WHEEL AND SUBSEQUENTLY NOT INSTALLED. DURING THE FOLLOWING TRIP THE WHEEL BEARINGS FAILED AND DAMAGED THE WHEEL ASSEMBLY AND AXLE.
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.