How to save fuel

Some tutorials involving trim and other magic should be up soon. If you can fly into strong tailwinds and fly at different altitudes depending on how much you want to burn.


Maintaining a reasonable cruising speed is also important. @DeerCrusher made a great table:

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Depends… if your in level flight and you can see the pink line in the trim box, you need to trim until the pink line goes away. On a fully loaded 787-9 I find that 50% trim is perfect.

Keep in mind you can trim while in a climb but you’ll have to return once in cruise.


I agree, 50% is just fine for a fully loaded 789
I tested it now on a flight from montreal to dubai at FL370, mach0.85

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Would I ever steer you guys wrong? 😊


This might help:

No, it’s as simple as a that!

Ditch the passengers and luggage


Yes…just yes ;) ha


Never use TOGA during your flight :)

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To save more fuel go higher but remember the higher you go the more you have to reduce your speed for the autopilot put your ground speed will be higher.

It’ll be useful to determine the aircraft’s cruising speed and cruising altitude, usually assigned (I’m assuming) where the plane performs optimally.

You don’t have to worry so much during take off and climb as the increased fuel consumption would be offset by the decrease in fuel consumption on descent.

You can also plan ahead to carry less cargo (passengers shouldnt be booted off wink wink) since less weight means less fuel use ;)

Hopefully this was helpful!

You also have to step climb.

I just completed a very long flight and -as you get bored- did some tests. The fuel burn at 12k feet was nearly 30-40% higher than at 32k feet. Perhaps this is a well known to commercial pilots, but to me it was quite a surprise. The thing is that you loose a lot of fuel during initial takeoff and climb, because you’re heavy.
I have not yet found out the tradeoff between the climb and flying high… ;-)


Air is thinner at high altitudes, so engines were designed to work better with thin air, so in other words, engines work better at high altitudes.


Keep in mind that your fuel usage will be red until you pretty much reach cruising altitude and level off.

Going 4k VS will not cut it in some aircraft. Keep it around 2000-3000 depending on the aircraft while climbing. 250 up to 10k then increase to 300ish then transition to the cruising mach number. I do A320 crusing at .77. Seems to work out best for me.

If you are sitting on the ground in a long line of traffic, taxi with one engine. But be sure to start it before asking for takeoff. Do not start it once you are on the runway, ATC will not appreciate the delay.

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This is another reason!!!

It starts on the ground, Single engine taxi if its a long taxi or its busy… every KG/LBS counts


I think it’s about finding a balance. Thicker air = more thrust but also more air resistance. Thinner air = less thrust but less air resistance. So you basically have to find a good balance between the two but also taking into account that the thinner the air, the less lift the wings generate so you need more speed higher up.

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By the way, you know you’re in trouble when: 20171013_225603