What is the standard height of a vehicle to clear under an aircraft's wing?

Answer: C — 11 feet or less

The standard height for a vehicle to clear under an aircraft's wing is 11 feet or less. This height is in place to ensure safety around the aircraft and to prevent any potential collisions with the wings, which are a critical part of the aircraft's structure. Different aircraft have varying wing heights, and providing a clearance of 11 feet ensures that most vehicles can pass underneath without risk. This height standard is important for airfield operations since it allows for the movement of service vehicles, maintenance equipment, and other support vehicles without endangering personnel or damaging the aircraft.