How can distributing fuel affect the CG during flight?

How can distributing fuel affect the CG during flight?

• A. Fuel adds weight and shifts CG depending on tank location; flight planning may require balance adjustments.
• B. CG is fixed regardless of fuel.
• C. Only empty weight affects CG.
• D. Fuel weight does not affect CG.

Answer: (D)

Fuel distribution affects the center of gravity because the CG is the balance point created by the moments of all weights in the aircraft. When you add fuel, you’re adding weight at specific locations (fuel tanks). If more fuel sits in a wing tank toward one side, that added weight creates a larger moment on that side and shifts the CG toward that wing. As you burn fuel during flight, the remaining weight and its position change the moments again, so the CG can move unless you compensate. That’s why flight planning considers where fuel is located and how it will be burned or transferred to keep the airplane within its allowable balance range. In contrast, statements that fuel doesn’t affect CG or that only empty weight matters ignore how the weight’s location changes the overall balance as fuel is added and consumed.

Fuel distribution affects the center of gravity because the CG is the balance point created by the moments of all weights in the aircraft. When you add fuel, you’re adding weight at specific locations (fuel tanks). If more fuel sits in a wing tank toward one side, that added weight creates a larger moment on that side and shifts the CG toward that wing. As you burn fuel during flight, the remaining weight and its position change the moments again, so the CG can move unless you compensate.

That’s why flight planning considers where fuel is located and how it will be burned or transferred to keep the airplane within its allowable balance range. In contrast, statements that fuel doesn’t affect CG or that only empty weight matters ignore how the weight’s location changes the overall balance as fuel is added and consumed.