# SDR AALA202301038733

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 31, 2022
- Submitted: January 3, 2023
- Operation: Air carrier
- Aircraft: [N170US](https://openairdocs.org/aircraft/N170US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1462
- Aircraft time: 69,716 hours, 26,669 cycles
- System (JASC): [3250 · Landing Gear Steering System](https://openairdocs.org/jasc/3250)
- Part: Control Servo
- Part number: C247360012
- Part serial: H1451
- Condition: Faulted
- Location: Nlg Steering
- Part time: 69,727 hours, 26,673 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/AALA202301038733

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO MIA DUE TO A NOSE WHEEL STEERING FAULT MESSAGE DISPLAYED DURING CRUISE. THE AIRCRAFT LANDED SAFELY AT MIA. MAINTENANCE REPLACED THE NOSE LANDING GEAR STEERING SERVO CONTROL PER AMM 32-51-51 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.

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