What was found
F/O OXYGEN MASK MICROPHONE WILL NOT RESET. REPLACED OXYGEN MASK ASSY IAW AMM, OPS NORMAL.
- Difficulty date
- July 4, 2013
- Submitted
- July 25, 2013
- Operation
- Air carrier
- Aircraft
- N121UA
- Make and model
- Boeing 747422
- Aircraft serial
- 29167
- Aircraft time
- 58,951 hours, 6,859 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 2340 · Interphone/Passenger Announcement (PA) System
- Part
- Microphone
- Condition
- Inoperative
- Location
- Oxygen Mask
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.