# SDR AALA2019080529007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2019
- Submitted: August 5, 2019
- Operation: Air carrier
- Aircraft: [N968TW](https://openairdocs.org/aircraft/N968TW), registered now
- Make and model: Doug MD 83
- Registry model: [Doug MD 83](https://openairdocs.org/model/mcdonnell-douglas-md-83) (OpenAirDocs)
- Aircraft serial: 53618
- Aircraft time: 55,153 hours, 28,516 cycles
- System (JASC): [3250 · Landing Gear Steering System](https://openairdocs.org/jasc/3250)
- Part: Bypass Valve
- Part number: 59561015501
- Part serial: EFS32288
- Condition: Unreliable
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA2019080529007

## Discrepancy

AIRCRAFT WAS GROUNDED: PILOT REPORTS UPON TAXING ON RWY FOR TAKE OFF NOSE WHEEL STEERING VERY DIFFICULT TO OPERATE AND THEN NOSE WENT OVER CENTER. MAINTENANCE REMOVED AND REPLACED FWD & AFT NOSE WHEEL STEERING BY-PASS AND RELIEF VALVE AND BY-PASS ACTUATING ARM IAW AMM 32-52-05. OPS CHECKED GOOD. NO LEAKS NOTED.

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