# SDR AALA201610049012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 30, 2016
- Submitted: October 4, 2016
- Operation: Air carrier
- Aircraft: [N749US](https://openairdocs.org/aircraft/N749US), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1313
- Aircraft time: 43,253 hours, 27,686 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Control Valve
- Condition: Leaking
- Location: Apu
- Part time: 20,920 hours, 13,256 cycles
- Stage of operation: NR
- 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/AALA201610049012

## Discrepancy

APU BLEED AIR ON, STRONG ODOR IN CABIN.   THE AIRCRAFT WAS GROUNDED.  MAINTENANCE FOUND OIL PRESENT UNDER SURGE CONTROL VALVE AND REPLACED THE APU PER TASK CARD 26L31049003. A SATISFACTORY LEAK AND OPERATIONAL CHECK WAS ACCOMPLISHED.

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