B767-300 crew had the center fuel tank not feed fuel properly.

Attributes
ACN	557198
Time
Date	200208
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : egll.airport
State Reference	FO
Altitude	msl single value : 32000
Environment
Flight Conditions	VMC
Aircraft 1
Controlling Facilities	artcc : egtt.artcc
Operator	common carrier : air carrier
Make Model Name	B767 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 175 flight time total : 18000 flight time type : 3500
ASRS Report	557198
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
ASRS Report	557200
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : fuel quantity other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance controller : provided flight assist flight crew : declared emergency flight crew : landed as precaution flight crew : landed in emergency condition none taken : detected after the fact other
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

After leveloff, we noticed left center fuel tank pump was not working properly. This was causing a fuel imbalance (in wing tanks). We communicated with dispatch our desire to divert to egll, which we did. We dumped fuel, but still landed over maximum allowable landing weight (344000 versus 320000 pounds). Because of that, I requested emergency equipment to stand by. Followed SOP. Uneventful landing.

Original NASA ASRS Text

Title: B767-300 CREW HAD THE CTR FUEL TANK NOT FEED FUEL PROPERLY.

Narrative: AFTER LEVELOFF, WE NOTICED L CTR FUEL TANK PUMP WAS NOT WORKING PROPERLY. THIS WAS CAUSING A FUEL IMBALANCE (IN WING TANKS). WE COMMUNICATED WITH DISPATCH OUR DESIRE TO DIVERT TO EGLL, WHICH WE DID. WE DUMPED FUEL, BUT STILL LANDED OVER MAX ALLOWABLE LNDG WT (344000 VERSUS 320000 LBS). BECAUSE OF THAT, I REQUESTED EMER EQUIP TO STAND BY. FOLLOWED SOP. UNEVENTFUL LNDG.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.