# SDR UALA2012031901782

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2012
- Submitted: April 20, 2012
- Operation: Air carrier
- Aircraft: [N796UA](https://openairdocs.org/aircraft/N796UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26931
- Aircraft time: 63,160 hours, 8,954 cycles
- Engine: Pwa PW40903
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Shutoff Valve
- Part number: 32153947
- Part serial: 379
- Condition: Faulty
- Location: Hydraulic Sys
- Stage of operation: NR
- 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/UALA2012031901782

## Discrepancy

AIR DEMAND C1 HYD PUMP APPEARS TO RUN CONT REGARDLESS OF SWITCH POSIT.  REPLACED MODULATING SHUTOFF VALVE C1 HYD PUMP AS PER MM.  ALL OPS AND CHECK OKAY.

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