B787 Minimum fuel in tanks...
 

Can anybody give me the B787-8 and -9 Boeing minimum fuel in tanks and the B777-200LR and B777-300ER minimum fuel in tanks as well...thanks folks

Minimum fuel... as in minimum block, unusable ullage, or what?

Minimum fuel is just before the engines flame out

When the lights come on. Seriously.

Minimum block fuel...is what I'm looking for

Minimum block depends on the sector and on the countries rules you are following. Your question makes no sense.

Likewise..I am not really understanding the question........

For our 777-200s and 300s there's no minimum fuel level listed in the limitations section of the FCOM, the only vaguely relevant comment in another manual is that minimum fuel in tanks for a sector is flight plan fuel.

What you need to get the job done?

Nuggs,
Perhaps you are looking for the minimum fuel in tanks after landing, below which one would have to declare an emergency? (In other words, 30 minutes' fuel at 1500ft, clean config, at the planned weight after diversion.)

For the 787-8 about 2000 kgs.
For the 787-9 about 2300 kgs.

Some operations assign an FCOM Limitation minimum fuel for takeoff in the B744 as 30,000kgs. This is to avoid FUEL PUMP PRESS messages due to unporting of fuel pumps during acceleration.

The 777 and 787 have no such limitations, that I'm aware of.

I'm sorry I should have been more clear....it would be the minimum fuel in tanks that on landing would not havee the min fuel lights coming on or having to do a flaps 20 landing in case of a go around...

I thought at one time I had read that the minimum fuel in tanks had to be 4800 kgs but I can't find it written anywhere for all 777 models

Minimum block fuel...is what I'm looking for ....anything lower would cause the low fuel lights to come on and a possible flameout in the event of a go around ...

I think he's looking for the minimum operational Fuel load, similar to the 744 (QF anyway) which can't take-off with less than 30,000kg of fuel on board. Does the 787 have any such limitation?

Minimum 'block' fuel? The minimum fuel required for takeoff?

Your question about the minimum fuel doesn't make sense. If the low fuel lights come on you don't necessarily flame out in the event of a g/a. You have x amount of fuel(time) left. If you exceed x time you'll flame out. If you land inside of x minutes you won't flame out.

And fuel burn varies greatly between fully configured, partially configured, or clean. The time spent in any of the configurations changes the amount of time to flameout.

Fuel lights?? :bored:

Anyhow my current FCOM for the 777 says you will get the "Fuel Qty Low" EICAS message if the quantity of fuel in either left or right main tank is "low", theres no numeric amount specified....If memory and old course notes serve me correctly the trigger is less than approximately 2000 kg of fuel in either left or right tank..

Since the 747 has been mentioned when I first operated the classic 747 the company decreed min fuel load was 40 tonnes ( i.e. tank to engine feed, 10 tonnes per main tank) because of supposed worries about fuel pumps unporting etc....over the years it became apparent that wasn't a problem and on both the 747 and then the 744 we carried flight plan fuel'ish for departure, which made for fun on 30 minute or less "shuttle" sectors.

787 Fuel Qty Low EICAS I understand to appear at 1700kg or below for either tank.