How is the takeoff flight path segmented?

First Segment: Begins at 35 ft AGL with V2 speed and ends when gear is retracted.

Second Segment: Gear up, full takeoff thrust, minimum climb gradient of 2.4% for twin-engine aircraft.

Third Segment: Level-off segment for flap retraction and acceleration to final climb speed. Height is limited by engine thrust time limits (typically 5 or 10 minutes).

Final Segment: Begins after acceleration and flap retraction, continues to 1,500 ft AGL.