What is the accelerate-go distance primarily used to evaluate during takeoff planning?

• A. It accounts for continuing takeoff after an engine failure at V1 and climbing to 35 feet before V2.
• B. It is used to determine ground roll distance only.
• C. It is the distance required to stop after an aborted takeoff.
• D. It is the distance to reach cruise speed after liftoff.

Answer: (A)

Accelerate-go distance is the distance your airplane needs to continue a takeoff after an engine failure at V1 and reach a safe height (commonly 35 feet AGL) before reaching V2. This distance is used in takeoff planning to ensure the runway is long enough to continue on one engine and meet obstacle clearance, combining the ground roll with the air distance needed to accelerate to V2 and climb through 35 ft. The other ideas describe only the ground roll, or the distance to stop after an aborted takeoff, or a completely different target (cruise speed), which don’t capture the one-engine-inoperative takeoff scenario.