Service difficulty report · Pcu · Boeing 777222

Difficulty date
January 1, 2008
Submitted
March 17, 2008
Operation
Air carrier
Aircraft
N779UA
Make and model
Boeing 777222
Aircraft serial
26941
Aircraft time
46,076 hours, 8,647 cycles
Engine
Pwa PW4077
Part
Pcu
Part number
251W12001
Condition
Faulty
Location
Aileron
Stage of operation
IN
How discovered
O
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

THE "FLIGHT CONTROLS" EICAS APPEARED AFTER ENGINE START. SUSPECT AILERON POWER CONTROL UNIT. REPLACED LT INBOARD AILERON PCU PER MM 27-11-11. ACP'D MAT CKS AND ADJUSTMENTS. RAN ENGINES, NO MSG'S DISPLAYED OR ACTIVE. AC OK FOR SERVICE.