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An aircraft maintenance technician (amt) reports that a B767 aircraft lost oil in # 2 engine in flight; approximately eight months after a cloth parts bag had been installed; but not removed. The bag was used to cover the # 6 bearing cavity drain opening for the scavenge oil return line. Flight diverted.
| Attributes | |
| ACN | 1129757 |
| Time | |
| Date | 201311 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZZ.Airport |
| State Reference | FO |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B767-400 and 400 ER |
| Operating Under FAR Part | Part 121 |
| Component | |
| Aircraft Component | Oil Line |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Powerplant Maintenance Airframe Maintenance Avionics |
| Experience | Maintenance Avionics 27 Maintenance Technician 27 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Deviation - Procedural FAR |
Narrative:
During maintenance in march 2013 on # 2 engine on a B767 aircraft in the area of the # 6 bearing scavenge area; a parts bag which was used to cover the scavenge opening to prevent FOD from entering the tube was inadvertently left in place after maintenance was completed. This caused the engine to lose oil during a flight in november 2013 which led to the flight diverting. The problem was that improper equipment was used during the maintenance in the # 6 bearing cavity area. This can be prevented in the future by manufacturing a cover with a highly visible marker/streamer to cover the scavenge tube port during maintenance.
Original NASA ASRS Text
Title: An Aircraft Maintenance Technician (AMT) reports that a B767 aircraft lost oil in # 2 Engine in flight; approximately eight months after a cloth parts bag had been installed; but not removed. The bag was used to cover the # 6 bearing cavity drain opening for the scavenge oil return line. Flight diverted.
Narrative: During maintenance in March 2013 on # 2 Engine on a B767 aircraft in the area of the # 6 bearing scavenge area; a parts bag which was used to cover the scavenge opening to prevent FOD from entering the tube was inadvertently left in place after maintenance was completed. This caused the engine to lose oil during a flight in November 2013 which led to the flight diverting. The problem was that improper equipment was used during the maintenance in the # 6 bearing cavity area. This can be prevented in the future by manufacturing a cover with a highly visible marker/streamer to cover the scavenge tube port during maintenance.
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.