# SDR SIMA20250505001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 5, 2025
- Submitted: May 6, 2025
- Operation: Air carrier
- Aircraft: [N240NN](https://openairdocs.org/aircraft/N240NN), registered now
- Make and model: Emb ERJ 170-200 LR
- Registry model: [EMB ERJ 170-200 LR](https://openairdocs.org/model/embraer-s-a-erj-170-200-lr) (OpenAirDocs)
- Aircraft serial: 17000594
- Aircraft time: 22,016 hours, 14,597 cycles
- System (JASC): [3250 · Landing Gear Steering System](https://openairdocs.org/jasc/3250)
- Part: Module
- Part number: 1855A000007
- Condition: Failed
- Location: Nlg Steering
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA20250505001

## Discrepancy

STEER FAIL ON TAKEOFF ROLL. ONCE GEAR EXTENDED ON ARRIVAL, EICAS AMBER STEER FAIL MESSAGE CAME BACK. CB RESET WORKED FOR ABOUT 30 SECONDS. CB METHOD ATTEMPTED 3 TIMES. STEER FAIL MESSAGE CONT TO COME ON. EMERGENCY DECLARED. "TRANSFERRED TO NRWC 040-DFW-04570" RAR STEERING CONTROL MODULE IAW AMM 32-53-01. OPERATIONAL CHECK GOOD

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