Airfield Driving Practice Exam 2026 – Complete Preparation Guide

The minimum distance that larger aircraft require when taxiing or during idle engines is 600 feet. This distance is critical due to the wash from larger aircraft engines, which can create significant turbulence that affects nearby aircraft and personnel. Maintaining a safe distance helps prevent accidents and ensures the safety of ground operations and personnel working around the aircraft on the airfield.

When larger aircraft are taxiing or have their engines idling, the potential for jet blast and air displacement increases. The 600-foot standard allows for adequate separation, reducing the risk of any undesired consequences that might arise from turbulence or jet wash. This regulation is in place to protect smaller aircraft that are more susceptible to being affected by the wake of larger jets and to maintain a safe and secure working environment around the airfield.