Service difficulty report · Oil Cooler · Boeing 767322

Difficulty date
October 18, 2012
Submitted
November 9, 2012
Operation
Air carrier
Aircraft
N648UA
Make and model
Boeing 767322
Aircraft serial
25285
Aircraft time
85,701 hours, 13,681 cycles
Engine
Pwa PW4060
Part
Oil Cooler
Part number
51G859U1600U
Condition
Faulty
Location
Nr 2 Engine
Stage of operation
IN
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.

What was found

NR 2 ENGINE-TS AOC MSGS, AOC? 6448-2 ESN 727790 - ENGINE IS DOWNLINKING CH A&B AOC TR CHECK FAIL MSG 351-23. REMOVED NR 2 ENGINE AIR-OIL COOLER. REF AMM 79-21-09 TASK 79-21-09-004-801. REF EG7491-2, REPLACE NR 2 ENGINE AIR-OIL COOLER (HEAT EXCHANGER).