Except when an aircraft is being serviced, vehicles should not be driven within how many feet of the aircraft?

The correct distance to maintain from an aircraft when not servicing it is 100 feet. This guideline is crucial for safety, as it helps prevent potential accidents and ensures that vehicles do not interfere with aircraft operations. The 100-foot buffer zone is established to minimize the risk of collisions and reduce the possibility of foreign object debris (FOD) entering critical areas around the aircraft. This distance provides a safeguard for both ground personnel and the aircraft, allowing for safe maneuvering of vehicles while maintaining the necessary precautions during aircraft operations.