SDR UALA2012010300054

Service difficulty report · Engine · Boeing 777222

Difficulty date: January 1, 2012
Submitted: January 13, 2012
Operation: Air carrier
Aircraft: N774UA
Make and model: Boeing 777222
Aircraft serial: 26936
Aircraft time: 64,752 hours, 12,325 cycles
Engine: Pwa PW4077
System (JASC): 7200 · Engine (Turbine/Turboprop)
Part: Engine
Condition: Malfunctioned
Location: Nr 1
Stage of operation: NR
How discovered: 9
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 1 ENGINE ISSUE. FOUND ON EPDC THAT ENG NR 1 EEC SHOWS POWERED ON EICAS DISPLAY, ALL ENG INDICATIONS ARE ON, ON GROUND FOR LEFT ENG WITHOUT EEC TEST SWITCH ENGAGED. DEPOWERED ACFT. CIRCUT BREAKERS RESET FROM EEC CONTROL. EDIU LT & RT. SWAPPED LT & RT EDIUS. RETURNED TO ORIGINAL POSITIONS. PERFORMED ELMS CABINET RESET. CHECKED LT EEC AND PMA WIRING PER MM. PERFORMED FIM TASK 73-28 -00-825 & 73-28-00-810. INDICATIONS RETURNED TO NORMAL. ACFT OK FOR SERVICE.