Which statement is true about Zero Fuel Weight (ZFW)?

• A. Usable fuel is included in ZFW.
• B. ZFW equals MTOW minus fuel.
• C. Zero Fuel Weight excludes usable fuel.
• D. ZFW is the total aircraft takeoff weight.

Answer: (C)

Zero Fuel Weight is the weight of the aircraft with all payload (passengers, baggage, cargo) and the aircraft itself, but without any usable fuel on board. In other words, it represents everything that stays on the aircraft regardless of fuel burn, before you add the fuel needed for the flight. That’s why the statement that Zero Fuel Weight excludes usable fuel is the correct one: the usable fuel is added later to reach the takeoff weight.

This distinction matters because it separates the weight that remains constant with fuel planning from the weight that changes as you fuel for the flight. The other ideas don’t fit because MTOW is a maximum takeoff limit, not what ZFW represents, and takeoff weight includes fuel, so ZFW isn’t the total takeoff weight.