Service difficulty report · Starter · Boeing 777222

Difficulty date
March 8, 2009
Submitted
March 10, 2009
Operation
Air carrier
Aircraft
N204UA
Make and model
Boeing 777222
Aircraft serial
28713
Aircraft time
45,233 hours, 6,527 cycles
Engine
Pwa PW40903
Part
Starter
Condition
Faulty
Location
Apu
Stage of operation
IN
How discovered
O
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

APU FAILED TO START AND GENERATED FAULT CODE 49-10620. ORDERED DC-STARTER MOTOR PCN 651-0308 & APU CRANK CONTROL RELAY. REPLACED APU CRANK RELAY K2449 4 AND AUTO START CONT RELAY K24030, NO HELP. REPLACED APU CONTROLLER COMPUTER, NO HELP. RE-INSTALLED ORIGINAL APUC. REPLACED APU STARTER, OPS CHECK NORMAL. NO MSG DISPLAY.