# SDR AALA202601108908

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 27, 2025
- Submitted: January 10, 2026
- Operation: Air carrier
- Aircraft: [N770UW](https://openairdocs.org/aircraft/N770UW), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1393
- Aircraft time: 62,302 hours, 40,051 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Condition: Contaminated
- Location: Zone 300
- Stage of operation: AP
- How discovered: M
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202601108908

## Discrepancy

AIRCRAFT WAS GROUNDED: WHEN AIRCRAFT WENT TO IDLE ON DESCENT, FO AND MYSELF NOTICED HEAVY "DIRTY SOCK" SMELL. IT WAS ONLY IN COCKPIT.  MAINTENENCE DEONTAMINATED APU AND ACCOMPLISHED J/C 26L00021002 AND 26L00021014, NO LEAKS NOTED FROM APU OR COMPONENTS. OK FOR CONTINUED SVC.

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