What was found
IN CRUISE FL350 AIR SYNOPTIC SHOWS PRESS TO AIR C2 HYD PUMP. DURING TROUBLESHOOTING FOUND DEFECTIVE VALVE. REPLACE MODULATING VALVE, ALL OPS OK.
- Difficulty date
- April 23, 2010
- Submitted
- May 14, 2010
- Operation
- Air carrier
- Aircraft
- N791UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26933
- Aircraft time
- 55,231 hours, 8,167 cycles
- Engine
- Pwa PW4090
- System (JASC)
- 2910 · Hydraulic System, Main
- Part
- Modulating Valve
- Part number
- 32153947
- Part serial
- 341
- Condition
- Faulty
- Location
- Hyd System
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.