What is the safe distance to operate vehicles to the front of an aircraft with engines running?

Answer: B — 25 feet

The safe distance to operate vehicles to the front of an aircraft with engines running is indeed 25 feet. This distance is established to ensure the safety of personnel and equipment, protecting them from possible jet blast and debris that can be expelled from the engines. Jet engines generate significant thrust and can produce powerful gusts of air, which can be hazardous to any vehicles or individuals situated too close. By adhering to the 25-foot guideline, you help to minimize the risk of injury or damage from these air currents, while maintaining a safe operating environment on the airfield. This distance aligns with standard operating procedures developed to ensure safety around aircraft.