# SDR AALA201805229007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 18, 2018
- Submitted: June 5, 2018
- Operation: Air carrier
- Aircraft: [N721UW](https://openairdocs.org/aircraft/N721UW), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1095
- Aircraft time: 51,587 hours, 29,963 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Heater
- Condition: Faulted
- Location: Apu Oil Sump
- Stage of operation: NR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201805229007

## Discrepancy

MUSTY, DIRTY, SOCK ODOR IN THE COCKPIT, WITH BOTH APU BLEED AND ENGINE BLEEDS DURING ENTIRE FLIGHT.  AIRCRAFT WAS GROUNDED.   REPLACED THE APU OIL SUMP HEATER IAW AMM 49-96-51 AND PERFORMED SATISFACTORY OPERATIONAL CHECK.

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