# SDR UALA2010072602685

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2010
- Submitted: July 28, 2010
- Operation: Air carrier
- Aircraft: [N439UA](https://openairdocs.org/aircraft/N439UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 683
- Aircraft time: 45,005 hours, 17,317 cycles
- Engine: Iae V2527A5
- System (JASC): [2350 · Audio Integrating System](https://openairdocs.org/jasc/2350)
- Part: Amu
- Part number: AMU2790CB04
- Part serial: 22
- Condition: Inoperative
- Location: Oxygen Mask
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2010072602685

## Discrepancy

F/O'S OXYGEN MASK MICROPHONE IS INOPERATIVE.  REPLACED BOX, NO HELP.  REPLACED AMU PER MM.  MASK MIC OPS NORMAL.

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