What is the published circling radius for a Category A aircraft?

What is the published circling radius for a Category A aircraft?

• A. 1.67 NM
• B. 2.5 NM
• C. 1.0 NM
• D. 3.2 NM

Answer: (A)

Circling radius is the published distance used to define the obstacle-clearance area for a circle-to-land maneuver after an instrument approach. It scales with aircraft category, which is based on stall speed; lighter, slower Category A aircraft have the smallest radius. The standard published value for Category A is 1.67 nautical miles, reflecting the tighter turning envelope allowed by its lower speeds while still ensuring adequate clearance from obstacles. The other figures would not match the designated radius for Category A: they are larger radii used for other categories or not the recognized value for this category.

Circling radius is the published distance used to define the obstacle-clearance area for a circle-to-land maneuver after an instrument approach. It scales with aircraft category, which is based on stall speed; lighter, slower Category A aircraft have the smallest radius. The standard published value for Category A is 1.67 nautical miles, reflecting the tighter turning envelope allowed by its lower speeds while still ensuring adequate clearance from obstacles. The other figures would not match the designated radius for Category A: they are larger radii used for other categories or not the recognized value for this category.