What is the minimum amount of pavement required to complete a 180 degree turn?

The minimum amount of pavement required to complete a 180-degree turn is 75 feet. This dimension is primarily based on the aircraft's wingspan and tail clearance needed to maneuver safely without risking structural damage or obstacles. Successful completion of such a turn involves considering the aircraft's turning radius, which accounts for both the fuselage length and how much clearance is necessary for the wings during the turn.

A minimum of 75 feet ensures that the aircraft has sufficient space not only for the tires to pivot but also for additional room to accommodate the width of the wings, preventing any potential collisions with surrounding infrastructure. This is especially important in airport operations where tight spaces are common, as well as in ensuring the safety and efficiency of ground maneuvers.

The other options suggest distances that fall short of this requirement, which would likely result in difficulties during the turn, increasing the risk of the aircraft experiencing ground incidents. Therefore, the chosen minimum of 75 feet is essential for safely executing a 180-degree turn.