Service difficulty report · Circuit Card · Boeing 777222

Difficulty date
December 25, 2010
Submitted
December 28, 2010
Operation
Air carrier
Aircraft
N786UA
Make and model
Boeing 777222
Aircraft serial
26938
Aircraft time
60,285 hours, 8,827 cycles
Engine
Pwa PW4090
Part
Circuit Card
Part number
8105053
Part serial
C96050238
Condition
Faulty
Location
Anti Ice Valve
Component
Anti-Ice Valve
Component part number
S218W1015
Stage of operation
NR
How discovered
9
Nature of condition
J
Precautionary procedure
O

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

What was found

RT ENGINE ANTI-ICE (EAI) VALVE FAILURE TO THE CLOSED POSITION OR EAI CONTROL CARD FAILURE. REPLACED ENGINE ANTI-ICE VALVE. NO HELP. REPLACED ACIPS CONTROL CARD (RT EAI CARD). REPLACED ENG ANTI-ICE CONTROLLER. NO HELP. SECURED CONNECTOR DM30211A . RAN EAI RT ENGINE MAT TESTS PER FIM TASK 30-21-802. BOTH TESTS, ENGINE RUNNING (HI PRESS = 44 PSI) AND ENGINE NOT RUNNING, PASSED. NO STATUS MESSAGE.