Service difficulty report · Pcu · Boeing 777222

Difficulty date
July 9, 2013
Submitted
July 12, 2013
Operation
Air carrier
Aircraft
N785UA
Make and model
Boeing 777222
Aircraft serial
26954
Aircraft time
72,667 hours, 10,168 cycles
Engine
Pwa PW4090
Part
Pcu
Part number
15441007
Part serial
144
Condition
Faulty
Location
Flapperon
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

FLIGHT CONTROL SYSTEM STATUS MESSAGE 27-10306, FLAPPER ON POWER CONTROL UNIT RT INBD BYPASS SOLENOID OPERATED, VALVE IS NOT IN COMMANDED POSITION. TROUBLESHOT IAW FIM 27-11, TASK 906. WIRING CHECK FOUND BYPASS SOILENOID OPEN CIRCUIT. REPLACED RT INBD FLAPERON PCU IAW AMM 27-11-12. PERFORMED RT FLAPERON ACTUATOR CONFIDENCE TEST PASSED. STATUS MESSAGE DISAPPEARED.