# SDR UALA2012022701195

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 2012
- Submitted: March 29, 2012
- Operation: Air carrier
- Aircraft: [N791UA](https://openairdocs.org/aircraft/N791UA), registered now
- Make and model: Boeing 777222
- Aircraft serial: 26933
- Aircraft time: 63,606 hours, 9,264 cycles
- Engine: Pwa PW40903
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Part number: 35059208
- Part serial: 319
- Condition: Faulty
- Location: Hydraulic Sys
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2012022701195

## Discrepancy

C2 HYD DEMAND PUMP FAILING MAT TEST, OVERSPEED FAULT.  REPLACED C2 AIR DRIVEN PUMP TURBINE GEARBOX ASSY PER AMM AND LOGIC-SPEED CONTROL UNIT.

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