When does the second segment of the takeoff path start?

The second segment of the takeoff path, often referred to as the "second climb segment," begins once the landing gear is fully retracted. This phase of takeoff is characterized by the aircraft transitioning from a configuration suitable for takeoff (with gear down) to a configuration that promotes climb efficiency and speed (with gear up). During this phase, the aircraft is gaining altitude and is expected to achieve a positive rate of climb while continuing to accelerate towards the next target speed.

This moment is critical for flight safety and performance because it indicates that the aircraft is now in a more aerodynamic state, allowing for better performance and higher climb rates. The retraction of the landing gear reduces drag, which is essential for efficient ascent.

The other milestones mentioned, such as the initial altitude or achieving V2 (the takeoff safety speed) or reaching 1500 feet, occur either before or after the gear is retracted. Therefore, while they are important aspects of the takeoff procedure, they do not signal the start of the second segment of the takeoff path. The correct identification of when this segment begins is crucial for pilots and flight crews to manage the climb effectively and maintain safety throughout the takeoff sequence.