Which airfield design feature includes areas of frangibility?

• A. Areas of frangibility
• B. Clear zones next to and at end of runways
• C. Approach and departure clearance surfaces
• D. Standards for airfield markings

Answer: (A)

Frangibility is built into airfield design by designating zones where objects are constructed to yield or break away if struck by an aircraft. This reduces the risk of structural damage to the aircraft and occupants during an impact with surface objects. The feature that includes such zones is the areas of frangibility themselves, explicitly identifying these frangible elements within the design. Other airfield features serve different safety roles—clear zones adjacent to runways mainly provide obstacle clearance areas, approach and departure clearance surfaces define flight-path obstacle limits, and marking standards govern visibility and guidance—so they aren’t defined by frangible design.