Service difficulty report · Valve · Boeing 777222

Difficulty date
April 20, 2011
Submitted
May 27, 2011
Operation
Air carrier
Aircraft
N796UA
Make and model
Boeing 777222
Aircraft serial
26931
Aircraft time
59,212 hours, 8,449 cycles
Engine
Pwa PW40903
Part
Valve
Condition
Faulty
Location
Fuel System
Stage of operation
IN
How discovered
O
Nature of condition
K
Precautionary procedure
O

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

What was found

DURING FUELING OPERATION, FOUND FUEL SEEPING FROM LT JETTISON VALVE. VALVE DEF IN CLOSED POS PER MEL. CB COLLARED. NO FUEL NOTED. PER MEL FUEL TANK ENTRY REQUIRED THROUGH ACCESS PNL 543AB. 2-3 SHIFT SLOT FOR TANK ENTRY RQSTD VIA RQSLOT. VALVE AND ACTUATOR WERE REPLACED ON PTT 2122060. REPLACED NOZZLE VALVE ACTUATOR NO HELP, FUEL STILL LEAKING OUT FROM L JETT NOZZLE. ALSO DURING FUEL JETTISON SYSTEM OP CK, L FUEL JETT ISLN VLV STUCK IN 'IN TRANSIT' MODE, RECYCLING CB NO HELP. FUEL JETT SYS OP CK TASK 28-31-00-720-801 DID NOT PASS. ACP LT FUEL JETTISION NOZZLE VALVE ACTUATOR REPLACEMENT. FUEL JET SYS OPS CK OK