What was found
TURBINE VANE AND BLADE COOLING SYSTEM HAS CAUSED CRUISE EGT HOT AT ETOPS LIMIT. REPLACED NR 1 ENGINE UPPER TVBC VALVE , IAW AMM.
- Difficulty date
- November 23, 2011
- Submitted
- December 16, 2011
- Operation
- Air carrier
- Aircraft
- N223UA
- Make and model
- Boeing 777222
- Aircraft serial
- 30224
- Aircraft time
- 43,622 hours, 5,330 cycles
- Engine
- Pwa PW40903
- System (JASC)
- 7520 · Engine Cooling System
- Part
- Valve
- Condition
- Failed
- Location
- Nr 1 Tvbc
- Stage of operation
- CR
- How discovered
- O
- Nature of condition
- M, J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.