What was found
NR 1 ENGINE BACK UP GEN AIR-OIL HEAT EXCHANGER COOLER VALVE INOP. REPLACED NR 1 ENG BACK UP GEN AIR-OIL COOLER VALVE REF AMM. PART BORROWED. PART 808900-1, PCN 645-9045, SERIAL F48080. CONTAINER NOT ON BOARD.
- Difficulty date
- September 7, 2011
- Submitted
- September 9, 2011
- Operation
- Air carrier
- Aircraft
- N781UA
- Make and model
- Boeing 777222
- Aircraft serial
- 26945
- Aircraft time
- 61,717 hours, 10,966 cycles
- Engine
- Pwa PW4077
- System (JASC)
- 2420 · AC Generation System
- Part
- Shutoff Valve
- Part number
- 52G159
- Part serial
- F28772
- Condition
- Inoperative
- Location
- Nr 1
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.