# SDR 2007UALA05313

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 27, 2007
- Submitted: January 3, 2008
- Operation: Air carrier
- Aircraft: [N464UA](https://openairdocs.org/aircraft/N464UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1290
- Aircraft time: 26,756 hours, 9,884 cycles
- Engine: Iae V2527A5
- System (JASC): [3510 · Crew Oxygen System](https://openairdocs.org/jasc/3510)
- Part: Regulator
- Condition: Faulty
- Location: Oxygen Mask
- Component: Oxygen Mask
- Component part number: MXP40MXP4U
- 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/2007UALA05313

## Discrepancy

SECOND OBSERVER'S O2 MASK DOES NOT TEST AND STOWAGE BOX ASSY IS MISSING PARTS.  FAULTY REGULATOR.  REPLACED O2 MASK BOX.

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