What was found
FIRST OBSERVER'S O2 MASK FAILED TEST. REPLACED O2 MASK AND TEST OK AS IAW AMM.
- Difficulty date
- February 5, 2011
- Submitted
- February 7, 2011
- Operation
- Air carrier
- Aircraft
- N107UA
- Make and model
- Boeing 747422
- Aircraft serial
- 26900
- Aircraft time
- 51,066 hours, 6,167 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 3510 · Crew Oxygen System
- Part
- Oxygen Mask
- Part number
- MC1019151
- Part serial
- 976
- Condition
- Failed
- Location
- Cockpit
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.