Service difficulty report · Control Valve · Boeing 777222

Difficulty date
September 10, 2012
Submitted
October 22, 2012
Operation
Air carrier
Aircraft
N784UA
Make and model
Boeing 777222
Aircraft serial
26951
Aircraft time
69,011 hours, 9,695 cycles
Engine
Pwa PW40903
Part
Control Valve
Part number
8102042
Part serial
3015
Condition
Faulty
Location
Ac Bay
Stage of operation
CR
How discovered
O
Nature of condition
B
Precautionary procedure
O

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

What was found

ELECTRICAL ODOR IN GALLEY, FLIGHT DIVERTED. PILOT BUNK ROOM. TURNED OFF GALLEY POWER. ODOR WENT AWAY IN GALLEY AND BUNK AREA, THEN ADDITIONAL ODOR THROUGHOUT COCKPIT AND CABIN. RAN BLEED AIR, BOTH PACKS AND RECIRC FANS WITH NO ODOR. TURNED ON ALL GALLEY EQUIPMENT FOR 30 MIN WITH NO ODOR. CMC FAULT FOR THE BULK CARGO VENT FAN DOES NOT FOLLOW COMMAND OR IS OVERHEATED. REF DF620 AND COMPLIED WITH FIM TASK 21-00-00-808 J AND K. REF FIM TASK 21-26-802, MESSAGE SHOWED LATCHED, PERFORMED ECS BULK CARGO SYSTEM TEST AND TEST PASSED, MESSAGE UNLATCHED AND CLEARED AFTER TEST. BULK CARGO HEAT TEST ALSO PASS. FAN OPS TEST ALSO PASSED.