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Maintenance technician is informed after the fact that he and a helper installed a B737-700 brake on a B737-800 and signed it off. The part number was not correct and was detected after the aircraft had been released for flight.
| Attributes | |
| ACN | 1086119 |
| Time | |
| Date | 201305 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Powerplant Maintenance Airframe |
| Experience | Maintenance Technician 27 |
| Events | |
| Anomaly | Deviation - Procedural Maintenance Deviation - Procedural Published Material / Policy |
Narrative:
We were given a service check with some other tasks on the aircraft. We had to change the #1 brake and a nose tire. When we were ready for that; we started gathering all the equipment and aircraft maintenance manual (amm) and illustrated parts catalogue (ipc) references; and this wrong brake assembly (for aircraft 737-700) was among the others for 737-800; and we happened to pick this wrong one. During this brake change and the other assignments we both failed to double check the part number (p/n) of this brake with our documents on hand. We proceeded with the brake change and since they are very much alike; we never suspected anything wrong. At the time of signing documents; since my partner didn't have a release for the aircraft in work; I signed all documents. The following night; I was informed of the mistake that we made. The brake was replaced at another station with the correct one. I feel very; very sorry for this mistake; it's something that has never happened to me before. I try always to be careful with all work. I'm so sorry for this mistake.
Original NASA ASRS Text
Title: Maintenance Technician is informed after the fact that he and a helper installed a B737-700 brake on a B737-800 and signed it off. The part number was not correct and was detected after the aircraft had been released for flight.
Narrative: We were given a service check with some other tasks on the aircraft. We had to change the #1 brake and a nose tire. When we were ready for that; we started gathering all the equipment and Aircraft Maintenance Manual (AMM) and Illustrated Parts Catalogue (IPC) references; and this wrong brake assembly (for aircraft 737-700) was among the others for 737-800; and we happened to pick this wrong one. During this brake change and the other assignments we both failed to double check the part number (p/n) of this brake with our documents on hand. We proceeded with the brake change and since they are very much alike; we never suspected anything wrong. At the time of signing documents; since my partner didn't have a release for the aircraft in work; I signed all documents. The following night; I was informed of the mistake that we made. The brake was replaced at another station with the correct one. I feel very; very sorry for this mistake; it's something that has never happened to me before. I try always to be careful with all work. I'm so sorry for this mistake.
Data retrieved from NASA's ASRS site as of July 2013 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.