What was found
CAPT O2 MASK UNCONTROLLABLE IN EMERGENCY POSITION. REPLACED OXYGEN MASK. MASK OPERATES NORMAL.
- Difficulty date
- February 18, 2009
- Submitted
- February 19, 2009
- Operation
- Air carrier
- Aircraft
- N187UA
- Make and model
- Boeing 747422
- Aircraft serial
- 26877
- Aircraft time
- 65,911 hours, 7,801 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 3510 · Crew Oxygen System
- Part
- Oxygen Mask
- Part number
- MC1019151
- Condition
- Faulty
- Location
- Cockpit
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.