Service difficulty report · Gcu · Boeing 767322

Difficulty date
April 11, 2010
Submitted
April 12, 2010
Operation
Air carrier
Aircraft
N657UA
Make and model
Boeing 767322
Aircraft serial
27112
Aircraft time
74,442 hours, 12,030 cycles
Engine
Pwa PW4060
Part
Gcu
Part number
M734284DF
Part serial
315
Condition
Faulty
Location
Lt Generator
Stage of operation
NR
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

LT GEN LIGHT OFF. DUE TO SEVERAL REPORTS ON LT GEN FIELD LIGHT ON. ACCOMPLISH ELECTRICAL HARNESS CHECK IAW MM. ACCOMPLISH BPCU BITE TEST IAW FIM AND CORRECT ANY PROBLEMS. IF NO PROBLEMS FOUND, REPLACE LT GEN GCU IAW MM. REPLACED GCU. ACP HARNESS CK UP TO PYLON. LEFT GEN LIGHT OFF. DUE TO SEVERAL REPORTS ON LT GEN FIELD LIGHT ON PLEASE ACCOMPLISH ELECTRICAL HARNESS CHECK IAW MM. ACCOMPLISH BPCU BITE TEST IAW FIM AND CORRECT ANY PROBLEMS. IF NO PROBLEMS FOUND PLEASE REPLACE LT GEN GCU IAW MM. REPLACED GCU. ACP HARNESS CK UP TO PYLON.