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A maintenance tech performed a brake leak check on a B737, check ok. Maintenance later discovers that the brakes had a quick disconnect that was loose and the brakes were leaking everywhere.
| Attributes | |
| ACN | 630165 |
| Time | |
| Date | 200409 |
| Day | Thu |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 630165 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : company policies non adherence : far |
| Independent Detector | other other : 2 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Ambiguous |
Narrative:
I changed both #1 and #3 brakes. I performed leak checks on both brakes and found no evidence of leaks. When I got to work the next night I heard about the brake leaking and investigated on computer. It says the quick disconnect was loose and leaked everywhere. This was not the case when I performed the leak check.
Original NASA ASRS Text
Title: A MAINT TECH PERFORMED A BRAKE LEAK CHK ON A B737, CHK OK. MAINT LATER DISCOVERS THAT THE BRAKES HAD A QUICK DISCONNECT THAT WAS LOOSE AND THE BRAKES WERE LEAKING EVERYWHERE.
Narrative: I CHANGED BOTH #1 AND #3 BRAKES. I PERFORMED LEAK CHKS ON BOTH BRAKES AND FOUND NO EVIDENCE OF LEAKS. WHEN I GOT TO WORK THE NEXT NIGHT I HEARD ABOUT THE BRAKE LEAKING AND INVESTIGATED ON COMPUTER. IT SAYS THE QUICK DISCONNECT WAS LOOSE AND LEAKED EVERYWHERE. THIS WAS NOT THE CASE WHEN I PERFORMED THE LEAK CHK.
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.