Service difficulty report · Valve · Boeing 7377H4

Difficulty date
February 14, 2014
Submitted
February 18, 2014
Operation
Air carrier
Aircraft
N479WN
Make and model
Boeing 7377H4
Aircraft serial
33990
Aircraft time
34,474 hours, 20,321 cycles
Part
Valve
Part number
125334D1
Part serial
AA21447
Condition
Faulty
Location
Fuel System
Stage of operation
CR
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

DURING CRUISE THE NR 2 FUEL GAUGE CONSUMED FUEL AT 100 LBS. EVERY SEVEN MINUTES, FASTER THAN THE NR 1 GAUGE. THIS RESULTED IN A 1000 LB IMBALANCE IN ABOUT AN HOUR. R & R CROSS FEED VLV BODY IAW MM.

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