# SDR AALA202509174089

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 14, 2025
- Submitted: September 17, 2025
- Operation: Air carrier
- Aircraft: [N710UW](https://openairdocs.org/aircraft/N710UW), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1019
- Aircraft time: 69,630 hours, 41,019 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil System
- Condition: Leaking
- Location: Apu
- Component: Apu, Hnywl
- Component part number: 38007081WGEN
- Stage of operation: DE
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202509174089

## Discrepancy

AIRCRAFT WAS GROUNDED: MUSTY, DIRTY SOCK ODOR THROUGHOUT ENTIRE AIRCRAFT IN FLIGHT REPORTED BY FLIGHT ATTENDANTS. THE ODOR WAS ALSO FAIRLY STRONG IN THE FLIGHT DECK. IT WASN'T NOTICEABLE ON THE GROUND WITH THE APU RUNNING. MAINTENANCE FOUND THE PLENUM SEAL LEAKING AND ALSO AN INTERNAL LEAK OF THE APU AND  REPLACED APU.

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