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An aircraft maintenance technician (amt) was informed that all four flight crew oxygen (O2) mask microphones on a B777-200 aircraft were found not connected to the back side of their stowage boxes. Lack of adequate maintenance turnover communications between shifts and the need for more avionics's operational checks prior to aircraft release were noted.
| Attributes | |
| ACN | 1079952 |
| Time | |
| Date | 201303 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B777-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Microphone |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Powerplant Maintenance Airframe |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy |
Narrative:
I was assigned to work an engineering order on a B777-200 aircraft. The job card was mostly completed when I was asked to pick up on the work turnover that was already in progress. I started at step 10; a;(7). When I arrived at the aircraft; the [flight crew] oxygen (O2) stowage box was already installed with a completed leak check. The stowage boxes were already installed but not signed for; so I checked to make sure that all the fasteners were tight. From what I have been told all four O2 mask microphones were not connected to the back side of the stowage box. There were several people that had been working on this job card over several shifts and I was tasked to complete an already started job. Turnovers from [maintenance] crew to [maintenance] crew need great improvement and the avionic's department needs more operational checks prior to release of the aircraft. Airworthiness directive.
Original NASA ASRS Text
Title: An Aircraft Maintenance Technician (AMT) was informed that all four flight crew Oxygen (O2) mask microphones on a B777-200 aircraft were found not connected to the back side of their stowage boxes. Lack of adequate Maintenance turnover communications between shifts and the need for more Avionics's Operational Checks prior to aircraft release were noted.
Narrative: I was assigned to work an Engineering Order on a B777-200 aircraft. The Job Card was mostly completed when I was asked to pick up on the work turnover that was already in progress. I started at Step 10; A;(7). When I arrived at the aircraft; the [flight crew] Oxygen (O2) stowage box was already installed with a completed Leak Check. The stowage boxes were already installed but not signed for; so I checked to make sure that all the fasteners were tight. From what I have been told all four O2 Mask microphones were not connected to the back side of the stowage box. There were several people that had been working on this Job Card over several shifts and I was tasked to complete an already started job. Turnovers from [Maintenance] crew to [Maintenance] crew need great improvement and the Avionic's Department needs more Operational Checks prior to release of the aircraft. Airworthiness Directive.
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.