# SDR USAA2012021700004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 16, 2012
- Submitted: April 17, 2012
- 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: 37,742 hours, 13,998 cycles
- Engine: Iae V2527A5
- Engine time: 42,034 hours, 16,536 cycles
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Servo Valve
- Part number: 13505078
- Condition: Leaking
- Location: Nr 2 Engine
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2012021700004

## Discrepancy

AFTER ENGINE START, PILOT REPORTED NR 2 ENGINE FAILED.  AIRCRAFT RETURNED TO GATE.  MAINTENANCE REMOVED AND REPLACED THE NR 2 ENGINE LOW/HIGH PRESSURE FUEL PUMP AND FUEL METERING UNIT IAW MM 73-12-41 AND 73-22-52.  FUEL METERING UNIT WAS A CONFIRMED FAILURE - SINGLE SERVO VALVE ASSEMBLY WAS LEAKING PER VENDOR.

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