In icing conditions, which speeds are most critical for safe operation?

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Multiple Choice

In icing conditions, which speeds are most critical for safe operation?

Ice on the wings increases stall speed and reduces lift, so the speeds that matter most are the ones that keep you safe during the high-risk phases of flight and ensure you can climb if needed. Vref and Vapp are the speeds used for the approach and landing with enough margin to account for the iced condition, helping you maintain control and avoid a stall on final approach. V2 is the takeoff safety speed, providing a reliable climb performance even if ice or an engine issue affects takeoff performance after liftoff. The other speeds either don’t reflect the increased stall margins ice creates (Vs, Vso) or aren’t the primary planning speeds for approach or one-engine-out takeoff (Vne, Vmo, VR, V1). So this combination best supports safe operation in icing.

Ice on the wings increases stall speed and reduces lift, so the speeds that matter most are the ones that keep you safe during the high-risk phases of flight and ensure you can climb if needed. Vref and Vapp are the speeds used for the approach and landing with enough margin to account for the iced condition, helping you maintain control and avoid a stall on final approach. V2 is the takeoff safety speed, providing a reliable climb performance even if ice or an engine issue affects takeoff performance after liftoff. The other speeds either don’t reflect the increased stall margins ice creates (Vs, Vso) or aren’t the primary planning speeds for approach or one-engine-out takeoff (Vne, Vmo, VR, V1). So this combination best supports safe operation in icing.

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