B777-200
Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine
Flight Crew Total 15000
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Fuel Issue
Flight Crew Landed in Emergency Condition; Flight Crew Returned To Departure Airport
Aircraft
On climb out; the EICAS indicated Fuel Disagree. We ran the checklist and determined that there was no fuel leak and the checklist concluded that the totalizer fuel was more accurate. After level-off and crossing first waypoint; we noticed the flight plan fuel and totalizer fuel differed by 9000 lbs while calculated fuel was much closer to flight plan. We contacted [Maintenance] and reported our findings. They were aware of the aircraft's extensive history of fuel issues and repairs. We agreed that a return to ZZZ would be the safest option. I contacted Dispatch and advised them to discuss the issue with [Maintenance] and that we were returning to ZZZ for a possible overweight landing or possible fuel dump. All concurred. We decided against dumping fuel since our greatest concern was a lack of true total fuel reading. We landed at an estimated weight of 503;000 lbs. Normal soft landing. Captain's authority used for overweight landing. On landing; the totalizer fuel showed 22;000 lbs more than the calculated fuel. After engine shutdown; the calculated fuel reset to match the totalizer fuel again. Sticking the fuel tanks at this point would have given all of us significant information. Without knowing the sequence of technical data and history of repairs and relationships to other components; all I could do is ignorantly speculate.
Flight Crew flying 777-200 encountered fuel quantity indication disagree.