What was found
TRIM AIR PRSOV L LEFT TRIM AIR PRESSURE RELIEF SHUT OFF VALVE (PRSOV) FAILED. REPLACED LIGHT TRIM AIR PRSOV, OPS TEST OKAY.
- Difficulty date
- July 22, 2009
- Submitted
- July 29, 2009
- Operation
- Air carrier
- Aircraft
- N774UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26936
- Aircraft time
- 54,426 hours, 10,754 cycles
- Engine
- Pwa PW4077
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Shutoff Valve
- Part number
- 8102296
- Part serial
- 153
- Condition
- Failed
- Location
- Left
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.