Service difficulty report · Unknown · Boeing 747422

Difficulty date
July 27, 2007
Submitted
July 31, 2007
Operation
Air carrier
Aircraft
N116UA
Make and model
Boeing 747422
Aircraft serial
26908
Aircraft time
35,247 hours, 4,244 cycles
Engine
Pwa PW4056
Part
Unknown
Condition
Unknown
Location
Fuel Transfer
Stage of operation
CR
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

APPARENT UNWANTED FUEL TRANSFER FROM CTR TANK TO TANK NR 3. FUEL INCREASE FROM 85.6 TO 86.4 IN APPROX 90 MINS HAS HISTORY, CREW ALSO ADVISES THAT NR 3 AFT OVRD GREEN FLOW BAR ON SYNOPTIC IS ILLUMINATED.