The Acceleration Segment ends when which event occurs?

• A. VFTO established and flaps retract
• B. The airplane reaches 1,000' AGL
• C. At V2 speed
• D. At touchdown

Answer: (A)

In takeoff, the acceleration segment covers the period from liftoff while you’re accelerating with the takeoff configuration in place. It ends at the point when you can retract the flaps and establish VFTO. That moment marks the transition to the climb in a clean configuration, so the end of acceleration is defined by VFTO being established and the flaps being retracted.

Other markers don’t define this transition: reaching 1,000 feet AGL is just a height, not a configuration change; V2 is a safe liftoff speed but you continue accelerating past it until flap retraction; and touchdown is the opposite end of the flight path, not the end of the acceleration phase.