Fuel remaining in 777 on landing

[Pete168]

Hi,
I'm a uni student working on a refuelling problem, specifically a 777-300.
I'm just wondering usually how much fuel a left in the tank after a long haul flight.
I was going to base my calculations on the tanks being completely empty but thought that might not be very realistic so just wondering if I can find a more realistic average value.
Thanks.

[WhichWayIsNorth]

A difficult question to answer as most factors will change the value. In most countries it is regulated that a flight must carry enough fuel to cope with unusual situations such as having to divert to their alternate or the possibility of entering holds for extended periods enroute.

[JohnieWalker]

OM-A of company that may not be named here states that it's 777-300ER should have no less then 5000kg fuel (minimum diversion fuel = altn fuel + final fuel) when arriving to destination. So you can basically accept this value. Or play it up to 7-8T.

[Dr Syntax]

B777-300ER, loosely based on LFPO-FMEE
Cruise 310kcas/M0.831
FL 310 350 370; 488-477ktas
5200 nautical air miles
Trip 660 mins
Diversion 150nm
Hold 30 mins
Contingency 3%
Allowances 1 min T-O; 3 min approach; 5 min missed approach
Div Fuel 3000kg
Hold Fuel 2800kg
Contingency 2500kg
Missed Approach 2000kg
Total Resvs 10300kg
Div + Hold 5800kg
Div + Hold + Cont 8300kg
TOW 300000kg
OEW 169000kg
Block Fuel 91000kg
Trip Fuel 79900kg
Payload 43000kg
Landing Wt 219000kg

Caveat Emptor!