Which speed represents the decision speed at which a pilot must decide to continue or abort the takeoff?

Which speed represents the decision speed at which a pilot must decide to continue or abort the takeoff?

• A. V1
• B. Vr
• C. V2
• D. V3

Answer: (A)

The key idea is the moment in the takeoff when you must decide whether to continue or abort the procedure. This is defined as the takeoff decision speed: the maximum speed at which an aborted takeoff can still be stopped safely within the remaining runway, given the aircraft’s performance and braking capability. If a problem arises before reaching this speed, you can still stop on the runway; if it occurs at or after this speed, there isn’t enough runway to stop safely, so you must continue with the takeoff. That’s why this speed is the deciding point for whether to abort or continue. Rotation speed is when you begin to lift the nose to start the takeoff, not the decision point. Takeoff safety speed is a climb performance target used after liftoff, ensuring safe obstacle clearance with one engine inoperative. The remaining option isn’t the decision point for stopping or continuing the takeoff.

The key idea is the moment in the takeoff when you must decide whether to continue or abort the procedure. This is defined as the takeoff decision speed: the maximum speed at which an aborted takeoff can still be stopped safely within the remaining runway, given the aircraft’s performance and braking capability. If a problem arises before reaching this speed, you can still stop on the runway; if it occurs at or after this speed, there isn’t enough runway to stop safely, so you must continue with the takeoff. That’s why this speed is the deciding point for whether to abort or continue.

Rotation speed is when you begin to lift the nose to start the takeoff, not the decision point. Takeoff safety speed is a climb performance target used after liftoff, ensuring safe obstacle clearance with one engine inoperative. The remaining option isn’t the decision point for stopping or continuing the takeoff.