# SDR USAA2013011000004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2013
- Submitted: January 10, 2013
- Operation: Air carrier
- Aircraft: [N176UW](https://openairdocs.org/aircraft/N176UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1499
- Aircraft time: 41,060 hours, 14,936 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: 38007081WGEN
- Part serial: P3344
- Condition: Leaking
- Location: Apu Bay
- Part time: 20,510 hours, 7,436 cycles
- Stage of operation: TX
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2013011000004

## Discrepancy

AFTER APU START, STRONG CABIN ODOR WAS NOTICED AFTER SELECTING BLEED AIR ON.  MAINTENANCE FOUND OIL LEAKING FROM LOAD COMPRESSOR WITNESS DRAIN.  REMOVED AND REPLACED THE APU.

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