# SDR AALA202102089011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 5, 2021
- Submitted: February 8, 2021
- Operation: Air carrier
- Aircraft: [N783AN](https://openairdocs.org/aircraft/N783AN), registered now
- Make and model: Boeing 777223
- Aircraft serial: 30004
- Aircraft time: 82,475 hours, 9,951 cycles
- System (JASC): [3250 · Landing Gear Steering System](https://openairdocs.org/jasc/3250)
- Part: Control Unit
- Condition: Inoperative
- 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/AALA202102089011

## Discrepancy

AIRCRAFT WAS GROUNDED: ON TAKEOFF ROLL GOT MASTER WARNING HORN WITH RED EICAS MESSAGE "CONFIG GEAR STEERING". ABORTED TAKEOFF AT 430000 LBS APPROX 65 KTS. NO RTO ACTIVATION. ACCOMPLISHED FIM 31-51-00 MAINTENANCE MESSAGE 31-78130. REMOVED AND REPLACED MGSCU IAW AMM 32-53-02.

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