Differentiate between Vmc and Vmca and describe how the POH bank angle affects them.

Differentiate between Vmc and Vmca and describe how the POH bank angle affects them.

• A. Vmc is stall speed; Vmca is flaps-down speed; bank angle doesn't affect them.
• B. Vmc is the minimum speed with the critical engine failed; Vmca is the minimum speed with the non-operating engine failed; both defined under a specified bank angle (commonly 5°) and configuration, and vary with weight and altitude.
• C. Vmc and Vmca are the same; bank angle has no effect.
• D. Vmc is the minimum speed for straight flight with all engines; Vmca is the maximum speed with one engine.

Answer: (B)