# SDR AALA201802199064

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 18, 2018
- Submitted: February 19, 2018
- Operation: Air carrier
- Aircraft: [N118US](https://openairdocs.org/aircraft/N118US), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 1264
- Aircraft time: 52,781 hours, 24,842 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: 38007081WGEN
- Part serial: P3765
- Condition: Faulty
- Part time: 30,797 hours, 14,654 cycles
- Stage of operation: DE
- How discovered: 9
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201802199064

## Discrepancy

. DURING DESCENT, CABIN AIR HAD MUSTY SMELL LIKE A DIRTY SOCK. PERFORMED CABIN ODOR TROUBLE SHOOTING AND FOUND SOURCE OF ODOR TO BE FROM AUXILIARY POWER UNIT. REPLACED AUXILIARY POWER UNIT.

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