What was found
LEFT ENGINE BLEED FAN AIR MODULATING VALVE (FAMV) FAILED OPEN OR CLOSED OR LEFT AIR SUPPLY AND CABIN PRESSURE CONTROLLER FAILURE. DEACTIVATED LT ENG FAMV PER MEL REQUIREMENTS. REPLACED FAMV PER MM, OPS TESTED GOOD.
- Difficulty date
- October 25, 2011
- Submitted
- November 18, 2011
- Operation
- Air carrier
- Aircraft
- N793UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26946
- Aircraft time
- 63,332 hours, 9,161 cycles
- Engine
- Pwa PW40903
- System (JASC)
- 3610 · Pneumatic Distribution System
- Part
- Valve
- Part number
- 32907449
- Part serial
- 95
- Condition
- Faulty
- Location
- Lt Bleed
- Stage of operation
- NR
- 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.