# SDR USAA2012123100004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 29, 2012
- Submitted: December 31, 2012
- Operation: Air carrier
- Aircraft: [N744P](https://openairdocs.org/aircraft/N744P), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1287
- Aircraft time: 32,795 hours, 21,813 cycles
- System (JASC): [4950 · APU Bleed Air System](https://openairdocs.org/jasc/4950)
- Part: Cooling Fan
- Part number: 36161404
- Part serial: P3456
- Condition: Leaking
- Location: Apu
- Part time: 11,967 hours, 8,938 cycles
- Stage of operation: TO
- How discovered: O
- Nature of condition: B
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2012123100004

## Discrepancy

DURING TAKEOFF, CREW EXPERIENCED A STRONG OIL SMELL FOR 10-15 MINUTES.  SMELL DISSIPATED SLOWLY TO NO SMELL, CONTINUED UPON DESCENT POWER IDLE.  STRONG OIL SMELL RETURNED UNTIL TAXI-IN.  APU WAS NOT IN USE.  MAINTENANCE ACCOMPLISHED CABIN AIR QUALITY J/C 26L00021001 AND FOUND THE APU TO BE THE SOURCE.  FOUND THE APU COOLING FAN ASSEMBLY LEAKING.  REMOVED AND REPLACED APU COOLING FAN IAW AMM 49-52-51-000-002-A.  ACCOMPLISHED J/C 26L00021002 APU SMELL IN CABIN AND J/C 26L0021004 DECONTAMINATION OF ECS (ENGINES AND APU).  ALSO, REPLACED HEPA FILTERS.

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