# SDR AALA202609013204

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2026
- Submitted: September 1, 2026
- Operation: Air carrier
- Aircraft: [N703UW](https://openairdocs.org/aircraft/N703UW), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 904
- Aircraft time: 71,320 hours, 42,093 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Cooling Fan
- Part number: 707239471
- Part serial: P2728
- Condition: Leaking
- Location: Apu
- Component: Apu, Honeywell, 1319A
- Component part number: 38007081
- Stage of operation: AP
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202609013204

## Discrepancy

AIRCRAFT WAS GROUNDED: MUSKY SOCK SMELL LAST 15 MINUTES OF FLIGHT IN BOTH FLIGHT DECK AND CABIN - MAINTNENANCE FOUND THE APU OIL COOLING FAN WAS LEAKING INTERNALLY AND REPLACED IT *AALA202609013204* MAINTENANCE ALSO FOUND THE APU GEARBOX VENT TUBE HAD EVIDENCE OF COKING AND REPLACED IT *AALA202609010725* - MAINTENANCE A DECONATMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM WAS ACCOMPLISHED WITH NO LEAKS OR ODORS NOTED

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