# SDR UALA2012043002536

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 29, 2012
- Submitted: May 25, 2012
- Operation: Air carrier
- Aircraft: [N491UA](https://openairdocs.org/aircraft/N491UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1741
- Aircraft time: 32,942 hours, 14,611 cycles
- Engine: Iae V2527A5
- System (JASC): [3250 · Landing Gear Steering System](https://openairdocs.org/jasc/3250)
- Part: Servo
- Condition: Failed
- Location: Nlg Steering
- Stage of operation: NR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012043002536

## Discrepancy

NW STEER FAULT DISPLAYED ON UPPER ECAM SCREEN.  UPON GEAR EXTENSION INFLIGHT.  FOUND FAILURE MESSAGE FOR LT LG DOOR CLOSED PROXIMITY SENSOR 29GA, INSTALLED NEW REF MM32-31-73.  TESTED, NO HITS.  REPLACED NOSE WHEEL STEERING SERVO CONTROL IAW AMM 32-51-51. OPS CHECKED GOOD.

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