# SDR UALA2010091403412

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 10, 2010
- Submitted: September 15, 2010
- Operation: Air carrier
- Aircraft: [N854UA](https://openairdocs.org/aircraft/N854UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1731
- Aircraft time: 29,998 hours, 11,967 cycles
- Engine: Iae V2522A5
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Oxygen Mask
- Part number: MXP80111600U
- Condition: No Test
- 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/UALA2010091403412

## Discrepancy

CAPTAIN'S O2 MASK WILL NOT PRESS TO TEST. SWAPPED CAPTAIN'S AND 2ND OBSERVERS O2 MASK BOXES IAW AMM. CAPT'S MASK TESTS NORMAL, DEFERRED 2ND OBSERVERS SEAT IAW MEL 2511R.

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