What was found
FIRST OFFICER'S PIN ON OXYGEN MASK IS BROKEN. FIRST OFFICER UNABLE TO USE MICROPHONE. REINSTALLED O2 MASK AND OPS CHECKED OKAY.
- Difficulty date
- October 21, 2011
- Submitted
- November 16, 2011
- Operation
- Air carrier
- Aircraft
- N178UA
- Make and model
- Boeing 747422
- Aircraft serial
- 24385
- Aircraft time
- 88,233 hours, 10,705 cycles
- Engine
- Pwa PW4056
- System (JASC)
- 3510 · Crew Oxygen System
- Part
- Oxygen Mask
- Part number
- MC1025154
- Condition
- Broken
- Location
- Cockpit
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.