Flaps 20: what is the maximum indicated airspeed (KIAS)?

• A. 210 KIAS
• B. 215 KIAS
• C. 220 KIAS
• D. 225 KIAS

Answer: (C)

Extending flaps to twenty degrees changes the wing’s aerodynamics and places extra loads on the flap mechanism. Because of those added stresses, there is a defined maximum indicated airspeed for that flap setting, published by the manufacturer in the airplane’s POH. This V_FE value tells you the highest speed at which the flaps can be safely extended without risking mechanical damage, flutter, or abnormal deployment during operation. Keeping your speed at or below that limit ensures the flaps stay within their designed structural and aerodynamic limits. The correct choice is the one that matches that published limit for flaps twenty. If you’re unsure, check the POH or placards for the exact V_FE value at that flap position.