Service difficulty report · Eec · Boeing 767322

Difficulty date
March 14, 2013
Submitted
April 4, 2013
Operation
Air carrier
Aircraft
N676UA
Make and model
Boeing 767322
Aircraft serial
30028
Aircraft time
43,436 hours, 10,651 cycles
Engine
Pwa PW4052
Part
Eec
Condition
Faulted
Location
Nr 2 Engine
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NR 2 ENGINE OIL PRESSURE EEC C1 WITH EICAS OIL PRESSURE RED BOX LD. LIKELY PROBLEM IS AN EEC RESET RELAY PROBLEM. BELIEVE WHEN FUEL SWITCH IS MOVED TO CUTOFF, THAT EICAS IS NOT RECEIVING THE SIGNAL. FMU RECEIVES SIGNAL TO CUTOFF FUEL & ENG DOES SHUTDOWN RESULTING IN EEC DEPOWERING, CAUSING EEC C1 MSG & OIL PRESS TO GO BELOW MIN PSI, CAUSING OIL PRESS BOX TO TURN RED. REMOVED AND REPLACED NR 2 ENGINE EEC RESET RELAYS K1038 & K1039. RAN NR 2 ENGINE WITH NO DEFECTS.