Which takeoff distance calculation includes climbing to 35 feet and reaching V2 with remaining engines after an engine failure at V1?

• A. Accelerate-go distance
• B. Accelerate-stop distance
• C. Ground roll distance
• D. Takeoff distance to climb-out

Answer: (A)

The key concept is how takeoff distances are defined for engine-out scenarios. Accelerate-go distance is the measurement used when an engine fails at V1 and you continue the takeoff on the remaining engines, climbing to 35 feet AGL while maintaining the takeoff climb speed V2. It combines the runway distance to accelerate to V1, the distance needed to continue takeoff after an engine failure, and the initial climb through 35 feet at V2, which is the point at which you ensure a safe climb with one engine out.

This differs from other distances: accelerate-stop is the distance to abort at V1 and come to a stop on the runway; ground roll is the distance from brake release to liftoff with all engines operating; takeoff distance to climb-out covers the distance to reach a higher altitude during a climb-out, but not specifically the engine-out scenario to 35 feet at V2.