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A B757-200 was found on arrival to have #4 brake quick disconnect fitting mounting bolts missing. Cause unknown.
| Attributes | |
| ACN | 576030 |
| Time | |
| Date | 200303 |
| Day | Sat |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Aircraft 1 | |
| Controlling Facilities | tower : zzz.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | ground : maintenance ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 576030 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : person 2 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : installation performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
On our arrival at ZZZ, maintenance personnel discovered all 3 bolts which secure the quick disconnect to the #4 brakes were missing. All these bolts are normally secured by wires. It would be next to impossible for these bolts to work themselves loose on their own. Either they were not installed properly on the last maintenance look at the brakes or else it could not be explained in any other way, but sabotage.
Original NASA ASRS Text
Title: A B757-200 WAS FOUND ON ARR TO HAVE #4 BRAKE QUICK DISCONNECT FITTING MOUNTING BOLTS MISSING. CAUSE UNKNOWN.
Narrative: ON OUR ARR AT ZZZ, MAINT PERSONNEL DISCOVERED ALL 3 BOLTS WHICH SECURE THE QUICK DISCONNECT TO THE #4 BRAKES WERE MISSING. ALL THESE BOLTS ARE NORMALLY SECURED BY WIRES. IT WOULD BE NEXT TO IMPOSSIBLE FOR THESE BOLTS TO WORK THEMSELVES LOOSE ON THEIR OWN. EITHER THEY WERE NOT INSTALLED PROPERLY ON THE LAST MAINT LOOK AT THE BRAKES OR ELSE IT COULD NOT BE EXPLAINED IN ANY OTHER WAY, BUT SABOTAGE.
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.