# SDR AALA202410010235

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 28, 2024
- Submitted: October 1, 2024
- Operation: Air carrier
- Aircraft: [N920US](https://openairdocs.org/aircraft/N920US), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6490
- Aircraft time: 30,060 hours, 12,364 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Garlock Seal
- Part number: 38631041
- Condition: Leaking
- Location: Zone 100
- Stage of operation: NR
- 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/AALA202410010235

## Discrepancy

AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED THAT FUMES NOTICED DURING FLIGHT.   MAINTENANCE FOUND THE AIR OIL SEPERATOR GARLOCK SEAL ON THE APU ACCESSORY DRIVE GEARBOX LEAKING AND REPLACED IT. A SATISFACTORY LEAK AND OPERATIONAL CHECK WAS ACCOMPLISHED.** (CLOSED)

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