# SDR USAA2012011100006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 9, 2012
- Submitted: January 11, 2012
- Operation: Air carrier
- Aircraft: N621AW
- Make and model: Airbus A320-231
- Registry model: [Airbus A320-231](https://openairdocs.org/model/airbus-industrie-a320-231) (OpenAirDocs)
- Aircraft serial: 53
- Aircraft time: 70,909 hours, 31,968 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Seal
- Condition: Leaking
- Location: Apu
- Component: Apu
- Component part number: 38002784WGEN
- Stage of operation: DE
- 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/USAA2012011100006

## Discrepancy

CABIN FILLED WITH VERY STRONG DIRTY SOCK SMELL ON DESCENT.  MAINTENANCE REMOVED AND REPLACED THE APU.  ALSO FOUND BLUE HYDRAULIC MANIFOLD LEAKING AT HP FILTER 2048GM - SECURED MANIFOLD WITH NO FURTHER LEAKS.  VENDOR CONFIRMED THE FAILURE OF THE APU DUE TO LOAD COMPRESSOR SEAL LEAKAGE.

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