AFOQT Practice Test

Which element does not affect Maximum Takeoff Weight (MTOW)?

1. Aircraft structure weight

2. Passager weight

3. Usable fuel weight

4. Unusable fuel weight

The correct answer is: Unusable fuel weight

The correct answer is that unusable fuel weight does not affect Maximum Takeoff Weight (MTOW). MTOW represents the maximum weight at which an aircraft is certified for takeoff. This weight includes several components, such as the aircraft structure weight, passenger weight, and usable fuel weight. These factors play significant roles in determining the operational limits of an aircraft because they directly impact its ability to generate lift and perform safely. Unusable fuel weight, on the other hand, refers to the portion of fuel that cannot be accessed or used by the aircraft's engines. Since this fuel contributes nothing to the lift or performance of the aircraft during flight, it is not considered part of the MTOW. Thus, while unusable fuel weight might be a factor in overall weight considerations, it does not factor into the calculations for the maximum takeoff weight limit.