# SDR UALA2011102105709

- Type: Service difficulty report (as reported; unverified)
- 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](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MC1025154
- Condition: Broken
- Location: Cockpit
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011102105709

## Discrepancy

FIRST OFFICER'S PIN ON OXYGEN MASK IS BROKEN.  FIRST OFFICER UNABLE TO USE MICROPHONE.  REINSTALLED O2 MASK AND OPS CHECKED OKAY.

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