Fuel Price

[sfk]

Does the fuel consumption of the aircraft change based on the distance? The farther a plane goes, it needs more fuel and more fuel to carry the extra fuel. So the longer the flight, more expensive the operating cost gets. Also, there are toga situations where you just burn of fuel, and climb and decent is sometimes not that efficient, so the graph looks like this. Is this kind of fuel consumption implemented in the game or just a plain constant fuel consumption?