# SDR AALA202109091356

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 30, 2021
- Submitted: September 9, 2021
- Operation: Air carrier
- Aircraft: [N9002U](https://openairdocs.org/aircraft/N9002U), registered now
- Make and model: Airbus A319-115
- Registry model: [Airbus A319-115](https://openairdocs.org/model/airbus-a319-115) (OpenAirDocs)
- Aircraft serial: 5698
- Aircraft time: 21,658 hours, 10,287 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Oil Cooler
- Part number: 1604941
- Part serial: 4330
- 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/AALA202109091356

## Discrepancy

AIRCRAFT WAS GROUNDED: DURING DESCENT FLIGHT CREW REPORTED A DIRTY / MUSTY SMELL AND SMELL DISAPPEARED WHEN THE #1 PACK WAS TURNED OFF.  **SUPPLEMENTAL REPORT FOR AALA202108311356: MAINTENANCE FOUND OIL LEAK AT THE APU OIL COOLING FAN AND APU OIL COOLER. REPLACED APU OIL COOLER PER AMM 49-91-44. ALSO REPLACED APU OIL COOLING FAN PER AMM 49-52-51 (AALA202109092943). ** (CLOSED)

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