# SDR AALA202607150312

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 12, 2026
- Submitted: July 15, 2026
- Operation: Air carrier
- Aircraft: [N818AW](https://openairdocs.org/aircraft/N818AW), registered now
- Make and model: Airbus A319-132
- Registry model: [Airbus A319-132](https://openairdocs.org/model/airbus-a319-132) (OpenAirDocs)
- Aircraft serial: 1375
- Aircraft time: 75,463 hours, 36,323 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Sensor
- Condition: Leaking
- Location: Apu
- Component: Apu, Hnywl
- 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/AALA202607150312

## Discrepancy

AIRCRAFT WAS GROUNDED: MUSTY SOCK SMELL DURING DESCENT AT 18,000'. FLIGHT CREW DID FUMES REMOVAL PROCEDURE AND FUMES DISSIPATED. MAINTENANCE ACCOMPLISHED SMOKE, ODOR, FUMES TROUBLESHOOTING TASK CARD 26L00021001 AND FOUND THE APU IGV DRAIN WITH SIGNS OF OIL LEAKAGE. MAINTENANCE ACCOMPLISHED BURN OUT WITH TASK CARD 26L00021013 AND PLACED THE APU ON MEL.  MAINTENANCE FOUND THE APU OIL SYSTEM WAS OVERSERVICED AND PROPERLY SERVICED IT PER AMM 49-90-00 - MAINTENANCE ALSO FOUND THE APU OIL TEMPERATURE SENSOR LOOSE AND LEAKING OIL -MAINTENANCE REPLACED THE SENSOR PER AMM 49-94-14 *AALA202608146306* - A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO LEAKS OR ODORS NOTED.

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