What was found
C2 HYD DEMAND PUMP FAILING MAT TEST, OVERSPEED FAULT. REPLACED C2 AIR DRIVEN PUMP TURBINE GEARBOX ASSY PER AMM AND LOGIC-SPEED CONTROL UNIT.
- Difficulty date
- February 25, 2012
- Submitted
- March 29, 2012
- Operation
- Air carrier
- Aircraft
- N791UA
- 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
- 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
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.