# SDR 2008UALA02762

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2008
- Submitted: May 14, 2008
- Operation: Air carrier
- Aircraft: N187UA
- Make and model: Boeing 747422
- Aircraft serial: 26877
- Aircraft time: 62,718 hours, 7,473 cycles
- Engine: Pwa PW4056
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Sequence Valve
- Condition: Malfunctioned
- Location: Mlg
- Stage of operation: CL
- How discovered: O
- Nature of condition: J, E
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2008UALA02762

## Discrepancy

RTFL WITH GEAR DISAGREE MESSAGE.  REPLACED NLG SAFETY VALVE & GEAR OPERATED DOOR SEQUENCE VALVE.

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