What was found
TEST SHOWED MAINTENANCE MESSAGE 75-40732 TURB VANE COOLING AIR VALVE SOL. THIS ITEM NEEDS TO BE CLEARED TOGETHER WITH DF856. REPLACED NACELLE ZONE SHUT-OFF VALVE. NEEDS OPERATIONS CHECK.
- Difficulty date
- September 2, 2013
- Submitted
- September 5, 2013
- Operation
- Air carrier
- Aircraft
- N221UA
- Make and model
- Boeing 777222
- Aircraft serial
- 30552
- Aircraft time
- 51,641 hours, 6,396 cycles
- Engine
- Pwa PW40903
- System (JASC)
- 7520 · Engine Cooling System
- Part
- Shutoff Valve
- Condition
- Malfunctioned
- Location
- Nacelle
- Stage of operation
- IN
- 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.