# SDR AALA202111107954

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 24, 2021
- Submitted: November 10, 2021
- 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: 60,344 hours, 35,152 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Cooling Fan
- Condition: Leaking
- Location: Apu
- Component: Apu, Hnywl, 1319A
- Component part number: 38007081
- 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/AALA202111107954

## Discrepancy

AIRCRAFT WAS GROUNDED: MUSTY ODOR FROM AIR CONDITIONING WITH BOTH ENGINE BLEEDS & APU BLEED ON BELOW FL 200.   ISOLATED SOURCE OF ODOR TO THE APU.   MAINTENANCE FOUND MINOR OIL LEAK FROM APU OIL COOLING FAN, REPLACED O-RINGS AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK PER AMM 49-52-51.

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