What was found
TRIM AIR PRSOV L LEFT TRIM AIR PRESSURE RELIEF SHUT OFF VALVE (PRSOV) FAILED. STATUS MSG-2124201 ACTIVE CL MODE MSG-2124201 ACTIVE CL MODE. REPLACED TRIM PRSOV PER MM, OPS GOOD.
- Difficulty date
- August 20, 2012
- Submitted
- September 26, 2012
- Operation
- Air carrier
- Aircraft
- N221UA
- Make and model
- Boeing 777222
- Aircraft serial
- 30552
- Aircraft time
- 46,911 hours, 5,869 cycles
- Engine
- Pwa PW40903
- System (JASC)
- 2160 · Cabin Temperature Control System
- Part
- Shutoff Valve
- Part number
- 8102294
- Part serial
- 202
- Condition
- Failed
- Location
- Ac Bay
- Stage of operation
- NR
- 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.