777 300ER Fuel glitched?

I tanked fuel for 15 Hours and im flying a 11 Hour flight RJTT to KJFK and only have enough fuel for 8 Hours. Is it just a glitch that i need to disregard or do i need to tank more fuel?

Hi there!

Something is not quite right here. It’s normal to be in a fuel deficit in the first phase of a long haul but not by that much.

What is your load weight % and current cruise altitude/speed?

Airplane Load is 73%
Speed is Mach 0.84
Current cruise Alt is FL370

Yeah you’re too high. That’ll be causing unnecessarily high fuel burn.

Go down to FL330. Your cruise speed is fine.

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When can i climb back to FL370?

Probably in around 5-6 hours or so.

i still don’t have enough fuel at FL330

What’s your ETA and current fuel remaining?

around 10:00

Is that your ETA or fuel remaining? I need both figures.

Fuel s 10:00 and Destination ETA is 11:40

You’ll burn fuel and therefore weight during the flight, you’ll be fine.

Use this if you want to understand more about the 777 family’s fuel burn and cruising alts for various weights: Your Guide to Fuel Burn and Cruising Altitudes in the New 777 Family [IGNORE 777F]

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This should help too [737 MAX 8 UPDATE] Your Ultimate Guide to Infinite Flight Fuel Burn + Fuel Calculator

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What the two people above recommended is still accurate but I’m a little confused how you have so little fuel. I loaded a 77W with full pax and full cargo, and 14 hours of fuel (since you descended to 330 about an hour after takeoff). At 330 I’m pulling about 12.5 hours and at 370 about 11 hours, so I’m not sure where 10 and 8 came from.

Edit: even if you packed 11 hours only you’d have 10 and 9, and this is with full passenger load which I assume you’re not carrying. Only thing that lines up given you packed 15 is dropping the flight spoilers.

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It’s getting better, destination ETE is 6:30 and Fuel ETE is 5:40

It will do that as weight comes off but that still doesn’t address what I said. 6 hours into an 11 hour flight with 15 hours of fuel you should be pulling like 8-9 hours of fuel left. What fuel percentage do you have onboard, and what’s your load?

it’s 44% currently

Is that the fuel or the load

That was the load
Fuel is 36%

Are you sure you’re getting 6 hours of fuel? I’m getting 8.5 at both 330 and 370. Confirm this is a 77W?