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A B737-300 during pushback; push crew noted right nose tire wobbling. Found wheel possibly installed incorrectly.
| Attributes | |
| ACN | 663668 |
| Time | |
| Date | 200507 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : pushback |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 150 flight time total : 9000 flight time type : 3000 |
| ASRS Report | 663668 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Independent Detector | other other : 3 |
| Resolutory Action | other |
| Consequence | other |
| Factors | |
| Maintenance | performance deficiency : non compliance with legal requirements performance deficiency : installation performance deficiency : logbook entry performance deficiency : unqualified personnel |
| Supplementary | |
| Problem Areas | Aircraft Company Environmental Factor Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
During pushback; the push crew noticed the right nosewheel tire wobbling. Contract maintenance was called. The mechanic removed the wheel and checked the bearings. No defects were noted. The mechanic believed that the wheel might have been installed incorrectly. The mechanic also had difficulty removing the wheel; due to stripped bolts. Once the wheel was reinstalled; the problem was gone. The reason for mentioning this incident is that I have noted a significant decrease in the maintenance quality at air carrier. I don't know if the stripped bolt was the cause of the wheel wobble; but it is rather poor workmanship to install damaged hardware.
Original NASA ASRS Text
Title: A B737-300 DURING PUSHBACK; PUSH CREW NOTED R NOSE TIRE WOBBLING. FOUND WHEEL POSSIBLY INSTALLED INCORRECTLY.
Narrative: DURING PUSHBACK; THE PUSH CREW NOTICED THE R NOSEWHEEL TIRE WOBBLING. CONTRACT MAINT WAS CALLED. THE MECH REMOVED THE WHEEL AND CHKED THE BEARINGS. NO DEFECTS WERE NOTED. THE MECH BELIEVED THAT THE WHEEL MIGHT HAVE BEEN INSTALLED INCORRECTLY. THE MECH ALSO HAD DIFFICULTY REMOVING THE WHEEL; DUE TO STRIPPED BOLTS. ONCE THE WHEEL WAS REINSTALLED; THE PROB WAS GONE. THE REASON FOR MENTIONING THIS INCIDENT IS THAT I HAVE NOTED A SIGNIFICANT DECREASE IN THE MAINT QUALITY AT ACR. I DON'T KNOW IF THE STRIPPED BOLT WAS THE CAUSE OF THE WHEEL WOBBLE; BUT IT IS RATHER POOR WORKMANSHIP TO INSTALL DAMAGED HARDWARE.
Data retrieved from NASA's ASRS site as of January 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.