# SDR UALA2012010400080

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 3, 2012
- Submitted: January 26, 2012
- Operation: Air carrier
- Aircraft: N543UA
- Make and model: Boeing 757222
- Aircraft serial: 25698
- Aircraft time: 77,550 hours, 22,555 cycles
- Engine: Pwa PW2037
- System (JASC): [3231 · Landing Gear Door Retract Section](https://openairdocs.org/jasc/3231)
- Part: Linkage
- Condition: Broken
- Location: Sequence Valve
- Component: Sequence Valve
- Component part number: 60B002476
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012010400080

## Discrepancy

LEFT MLG DOOR SEQUENCE VALVE LINKAGE IS BROKEN AT LOWER BRKT ASSY,  REPLACED DOOR SEQUENCE VALVE PER MM, OP CHECKED GOOD.

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