# SDR 2007UALA04297

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 18, 2007
- Submitted: October 19, 2007
- Operation: Air carrier
- Aircraft: [N556UA](https://openairdocs.org/aircraft/N556UA), registered now
- Make and model: Boeing 757222
- Aircraft serial: 26650
- Aircraft time: 51,840 hours, 19,002 cycles
- Engine: Pwa PW2037
- System (JASC): [3250 · Landing Gear Steering System](https://openairdocs.org/jasc/3250)
- Part: Metering Valve
- Condition: Malfunctioned
- Location: Nlg Steering
- Stage of operation: TX
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA04297

## Discrepancy

A/C PULLS RT DURING TAXI.  FOUND NLG DOES NOT CENTER.     NEW NLG STEERING METERING VALVE INSTALLED AND RIGGING ACCOMPLISHED BEFORE TEST RUN.


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