# SDR AALA202201211840

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 2021
- Submitted: January 21, 2022
- Operation: Air carrier
- Aircraft: [N740UW](https://openairdocs.org/aircraft/N740UW), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1265
- Aircraft time: 55,591 hours, 33,582 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Part number: 38007081WGEN
- Part serial: 4101
- Condition: Leaking
- Location: Aft
- Part time: 29,198 hours, 16,559 cycles
- Stage of operation: CL
- 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/AALA202201211840

## Discrepancy

AIRCRAFT WAS GROUNDED: SWEET AND DIRTY SOCK SMELL IN COCKPIT AND CABIN DURING CLIMB AND DESCENT, DISSIPATED IN CRUISE.   REPLACED APU WITH SERVICEABLE UNIT IAW WORKCARD 49-94-11, LEAK AND OPS CHECK GOOD.

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