# SDR AALA202407267722

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 24, 2024
- Submitted: July 26, 2024
- Operation: Air carrier
- Aircraft: [N907AA](https://openairdocs.org/aircraft/N907AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7732
- Aircraft time: 21,701 hours, 8,522 cycles
- System (JASC): [4990 · APU Oil System](https://openairdocs.org/jasc/4990)
- Part: O-Ring
- Condition: Leaking
- Location: Apu Oil Cooler
- 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/AALA202407267722

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED UPON DESCENT INTO CLT DUE TO THE FLIGHT CREW REPORTING A DIRTY SOCK SMELL WITH ENGINE AT IDLE. THE AIRCRAFT LANDED SAFELY AT CLT WITHOUT FURTHER INCIDENT. APU OIL COOLING FAN FOUND TO BE LEAKING OIL. REMOVED AND REPLACED O-RINGS PER AMM 49-52-51.

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