# SDR UALA2013012100372

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2013
- Submitted: February 8, 2013
- Operation: Air carrier
- Aircraft: [N406UA](https://openairdocs.org/aircraft/N406UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 454
- Aircraft time: 62,920 hours, 23,641 cycles
- Engine: Iae V2527A5
- System (JASC): [3250 · Landing Gear Steering System](https://openairdocs.org/jasc/3250)
- Part: Sensor
- Condition: Failed
- Location: Nlg Steering
- Stage of operation: TX
- 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/UALA2013012100372

## Discrepancy

NOSE WHEEL STEERING FAILED DURING TAXI IN.  NLG STEERING FAILED AS A RESULT OF FAILED NLG DOWNLOCK PROX SENSOR FAILURE.  THE REPLACEMENT OF THIS SENSOR IS DOCUMENTED IN AMSITM 9202012.  NOSE WHEEL STEERING TESTED OK WITH A TAXI TEST.

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