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A DC10-30 found #4 main tie bolt broken. Investigation of actual broken bolt showed a darkened area on the remains of one half of the bolt in the wheel; indicating bolt was partially cracked when installed. Replaced #4 main wheel tire and assembly.
| Attributes | |
| ACN | 665778 |
| Time | |
| Date | 200503 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 6 |
| ASRS Report | 665778 |
| Person 2 | |
| Affiliation | other |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation 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 other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : scheduled maintenance performance deficiency : non compliance with legal requirements performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Environmental Factor Maintenance Human Performance Company |
| Primary Problem | Maintenance Human Performance |
Narrative:
#4 tie bolt broken. Investigation of actual bolt showed a darkened area on the remaining half of the bolt left in the wheel; indicating that bolt was partially cracked at installation.
Original NASA ASRS Text
Title: A DC10-30 FOUND #4 MAIN TIE BOLT BROKEN. INVESTIGATION OF ACTUAL BROKEN BOLT SHOWED A DARKENED AREA ON THE REMAINS OF ONE HALF OF THE BOLT IN THE WHEEL; INDICATING BOLT WAS PARTIALLY CRACKED WHEN INSTALLED. REPLACED #4 MAIN WHEEL TIRE AND ASSEMBLY.
Narrative: #4 TIE BOLT BROKEN. INVESTIGATION OF ACTUAL BOLT SHOWED A DARKENED AREA ON THE REMAINING HALF OF THE BOLT LEFT IN THE WHEEL; INDICATING THAT BOLT WAS PARTIALLY CRACKED AT INSTALLATION.
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.