What do you get by subtracting fuel used during flight from Takeoff Weight?

When you subtract the fuel used during a flight from the Takeoff Weight, you arrive at the Landing Weight of the aircraft. The Takeoff Weight consists of the aircraft's Ramp Weight, which includes all the fuel, passengers, cargo, and the aircraft itself at the start of the flight. As the flight progresses and fuel is consumed, the total weight of the aircraft decreases.

The Landing Weight is significant because it impacts landing operations. The aircraft's performance during landing, such as required landing distance and approach speed, is directly linked to its weight at the time of landing. Pilots are trained to calculate Landing Weight to ensure that they operate the aircraft safely and effectively within its performance limits.

Other options, such as Ramp Weight and Zero Fuel Weight, refer to different measures that do not directly relate to the weight of the aircraft at landing. Ramp Weight is the total weight of the aircraft before departure, while Zero Fuel Weight refers to the weight of the aircraft without usable fuel, focusing on the structural weight plus payload. Cg Calculation pertains to the center of gravity computations, which also do not directly relate to the act of subtracting fuel from Takeoff Weight.