What was found
CAPT O2 MASK TEST NOT CORRECT. EMERGENCY P-TO TEST BUTTON STICKS OPEN. 10-19-07 REPLACED CAPTAIN'S MASK ASSY, OPERATIONAL TEST OK.
- Difficulty date
- September 16, 2007
- Submitted
- September 22, 2007
- Operation
- Air carrier
- Aircraft
- N127UA
- Make and model
- Boeing 747422
- Aircraft serial
- 28813
- Aircraft time
- 32,533 hours, 3,993 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 3510 · Crew Oxygen System
- Part
- Oxygen Mask
- Condition
- No Test
- Location
- Captain'S
- Stage of operation
- IN
- How discovered
- C
- Nature of condition
- L
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.