Airfield Management Block 1 Practice Test

The safety rule here targets how close a ground vehicle (or person) can operate to an aircraft based on how fast you’re moving. Even at a crawl, there’s a risk from wing movement, propeller or engine intake, and any unexpected engine start or aircraft shift. So for very slow movement, the minimum safe distance is smaller, but not zero. Five miles per hour paired with twenty-five feet represents the minimum clearance that current safety guidelines require to stay out of the aircraft’s immediate wake and any potential contact area. Distances of fifty or one hundred feet, while safe, go beyond what’s required for such a slow speed and would hinder operations. Five feet is far too close to avoid sudden movements or engine-related hazards. So the best match for five mph is twenty-five feet.