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A B727-200 was dispatched in non compliance with company maintenance practices with the left main landing gear #1 brake installed incorrectly. The wheel lugs were not aligned with brake slots.
| Attributes | |
| ACN | 515349 |
| Time | |
| Date | 200106 |
| Day | Sat |
| 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 : azo.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B727-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Experience | maintenance technician : 11 |
| ASRS Report | 515349 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : lighting performance deficiency : installation performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Environmental Factor Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
I received a company letter on jun/xb/01 informing me that on jun/xa/01, aircraft arrived in XXX from ZZZ with trouble taxiing to the gate. XXX technicians found that the #1 main landing gear brake I had installed the previous night was locked because the wheel lugs had not been aligned properly with slots on the brake assembly. The wheel was removed and installed correctly with no damage having been found. I believe that unlighted conditions on the ramp at approximately XA00 contributed to my failure to align the wheel lugs to the brake slots. This misalignment did not affect wheel nut torque or a rolling test of the wheel on the brake. The misalignment is not visible after installation.
Original NASA ASRS Text
Title: A B727-200 WAS DISPATCHED IN NON COMPLIANCE WITH COMPANY MAINT PRACTICES WITH THE L MAIN LNDG GEAR #1 BRAKE INSTALLED INCORRECTLY. THE WHEEL LUGS WERE NOT ALIGNED WITH BRAKE SLOTS.
Narrative: I RECEIVED A COMPANY LETTER ON JUN/XB/01 INFORMING ME THAT ON JUN/XA/01, ACFT ARRIVED IN XXX FROM ZZZ WITH TROUBLE TAXIING TO THE GATE. XXX TECHNICIANS FOUND THAT THE #1 MAIN LNDG GEAR BRAKE I HAD INSTALLED THE PREVIOUS NIGHT WAS LOCKED BECAUSE THE WHEEL LUGS HAD NOT BEEN ALIGNED PROPERLY WITH SLOTS ON THE BRAKE ASSEMBLY. THE WHEEL WAS REMOVED AND INSTALLED CORRECTLY WITH NO DAMAGE HAVING BEEN FOUND. I BELIEVE THAT UNLIGHTED CONDITIONS ON THE RAMP AT APPROX XA00 CONTRIBUTED TO MY FAILURE TO ALIGN THE WHEEL LUGS TO THE BRAKE SLOTS. THIS MISALIGNMENT DID NOT AFFECT WHEEL NUT TORQUE OR A ROLLING TEST OF THE WHEEL ON THE BRAKE. THE MISALIGNMENT IS NOT VISIBLE AFTER INSTALLATION.
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.