# SDR USAA2009091892563

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 2009
- Submitted: September 18, 2009
- Operation: Air carrier
- Aircraft: [N664AW](https://openairdocs.org/aircraft/N664AW), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1621
- Aircraft time: 29,470 hours, 11,072 cycles
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Valve
- Part number: 1779MK2
- Part serial: 1779806
- Condition: Stuck
- Location: Nr 1 Engine
- Part time: 36,857 hours, 15,024 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2009091892563

## Discrepancy

FLT 12 - PHX - RETURN TO FIELD - CREW RECEIVED ENGINE NR 1 BEARING 4 SYSTEM HIGH PRESSURE FAULT.  AFTER RECEIVING A SECOND ACARS MESSAGE OF OIL QUANTITY SLOWLY DROPPING, CREW ELECTED TO RETURN TO PHX.  MAINTENANCE FOUND THE SCAVENGE VALVE STUCK CLOSED.  REMOVED AND REPLACED THE NR 1 ENGINE BEARING 4 SCAVENGE VALVE IAW AIRBUS MAINTENANCE MANUAL 79-23-51.

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