# SDR AALA202107160461

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 14, 2021
- Submitted: July 16, 2021
- Operation: Air carrier
- Aircraft: [N764US](https://openairdocs.org/aircraft/N764US), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1369
- Aircraft time: 53,109 hours, 33,486 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: Cooling Fan
- Part number: 361614011
- Part serial: P1838C
- Condition: Leaking
- Location: Apu
- Part time: 1,056 hours, 2,093 cycles
- 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/AALA202107160461

## Discrepancy

AIRCRAFT WAS GROUNDED: ON DESCENT WE NOTICED A MUSTY ODOR STARTING BETWEEN 10000 AND 15000 ORIGINALLY SMELLED LIKE A WATER SEPARATOR MELTING. WE HAD A LOT MORE CONDENSATION THAN NORMAL F/O SAID HE SMELLED A SLIGHT OIL SMELL DURING THAT TIME. COULD SMELL ON THE GROUND WITH APU RUNNING ALSO. MAINTENANCE FOUND APU OIL COOLING FAN LEAKING. REPLACED OIL COOLING FAN AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK PER AMM 49-52-51-400-002A.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.