# SDR UALA2009101203209

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 10, 2009
- Submitted: October 12, 2009
- Operation: Air carrier
- Aircraft: N576UA
- Make and model: Boeing 757222
- Aircraft serial: 26690
- Aircraft time: 55,585 hours, 19,639 cycles
- Engine: Pwa PW2037
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MC1019151
- Part serial: 415
- Condition: No Test
- Location: Cockpit
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2009101203209

## Discrepancy

CAPTAIN'S O2 MASK DOES NOT TEST.  SWAPPED CAPTAIN'S O2 BOX AND MASK WITH 1ST OBSERVER.  FIRST OBSERVER'S SEAT AND ASSOCIATED EQUIPMENT INOP.  REPLACED 1ST OBSERVER O2 MASK, TESTS NORMAL.

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