# SDR 2008UALA00498

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 29, 2008
- Submitted: February 1, 2008
- Operation: Air carrier
- Aircraft: N549UA
- Make and model: Boeing 757222
- Aircraft serial: 25397
- Aircraft time: 61,200 hours, 17,749 cycles
- Engine: Pwa PW2037
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Knob
- Part number: MC1019101
- Condition: Broken
- Location: Oxygen Mask
- Stage of operation: IN
- How discovered: O
- Nature of condition: W
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2008UALA00498

## Discrepancy

OBSERVERS O2 MASK EMERGENCY KNOB BROKEN.      REPLACED OBS O2 MASK ASSY.                              



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