What was found
NR 2 ENG TCC HPT VALVE BUTTERFLY IS NOT CLOSED AT THE RIG POSITION. CONTINUE REMOVAL OF NR 2 ENG TCC HPT AIR VALVE. FOUND TCC HPT VALVE FAILED. RPLC'D VALVE SYSTEM OPERATED NORMAL. PASSED MAT TEST.
- Difficulty date
- January 24, 2012
- Submitted
- March 2, 2012
- Operation
- Air carrier
- Aircraft
- N797UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26924
- Aircraft time
- 62,331 hours, 8,794 cycles
- Engine
- Pwa PW40903
- System (JASC)
- 7520 · Engine Cooling System
- Part
- Valve
- Condition
- Failed
- Location
- Nr 2 Engine
- 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.