# SDR USAA920070930

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 2007
- Submitted: October 12, 2007
- Operation: Air carrier
- Aircraft: [N649AW](https://openairdocs.org/aircraft/N649AW), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 803
- Aircraft time: 36,027 hours, 13,851 cycles
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Pressure Valve
- Part number: 6774E010000
- Part serial: 0380
- Condition: Failed
- Location: Nr 1 Engine
- Part time: 26,912 hours, 10,487 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA920070930

## Discrepancy

LAS - YVR - EL - FLT 437 - LOG 7628896.  CREW REPORTED DURING CLIMB BOTH ENGINES WERE SURGING.  CREW DECLARED AN EMERGENCY AND RETURNED TO LAS.  MX REPLACED NR 1 ENGINE PRESSURE REGULATOR VALVE IAW AMM 36-11.  MX ALSO REPLACED THE ZONE CONTROL VALVE.  OPERATIONAL CHECK WAS GOOD.  A/C PASSED CHECK FLIGHT.  A/C WAS RETURNED TO SERVICE.

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