# SDR 2007UALA02139

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 19, 2007
- Submitted: June 22, 2007
- Operation: Air carrier
- Aircraft: N593UA
- Make and model: Boeing 757222
- Aircraft serial: 28144
- Aircraft time: 35,700 hours, 13,326 cycles
- Engine: Pwa PW2037
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Mask
- Condition: Defective
- Location: Cockpit
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA02139

## Discrepancy

OXYGEN MASK DEFECTIVE AT (1=CAPT, 2=1ST OFF, 3=1ST OBS), CREW COMMENTS, TEST BUTTON STICKS IN WHEN PUSHED.    [08-07-07]   REPLACED MASK.

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