What was found
BLEED FAMV L LEFT ENGINE BLEED FAN AIR MODULATING VALVE (FAMV) FAILED OPEN OR CLOSED OR LEFT AIR SUPPLY AND CABIN PRESSURE CONTROLLER FAILURE. HPFAC REPLACED PER AMM. SYS OPS NORMAL.
- Difficulty date
- November 29, 2012
- Submitted
- December 28, 2012
- Operation
- Air carrier
- Aircraft
- N792UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26934
- Aircraft time
- 68,395 hours, 9,745 cycles
- Engine
- Pwa PW40903
- System (JASC)
- 2131 · Cabin Pressure Controller
- Part
- Controller
- Part number
- 339910031
- Part serial
- 27
- Condition
- Faulty
- Location
- Cabin Pressure
- Stage of operation
- NR
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.