| Still Air Range – is the maximum distance an Aircraft can fly in nil wind conditions; it depends on the quantity of fuel after deducting the stipulated amount of reserve from the total fuel on board.
Still Air Range = Fuel On Board-Reserve ÷ Fuel Consumption |
| Flight time – is calculated by dividing the distance of the route flown by the ground speed of the Aircraft.
Flight time = Distance ÷ Ground speed |
| Flight Fuel– is calculated by multiplying flight time with fuel consumption.
Flight Fuel = Flight Time × Fuel Consumption |
| Excess Fuel – is calculated by deducting the Flight Fuel (fuel used in the flight) from the total fuel on board.
Excess Fuel = Fuel On Board- Flight Fuel |