The screen height varies from 35 ft for class A aeroplanes to 50 ft for class B aeroplanes. For any particular take-off, it must be shown that the distance required for take-off in the prevailing.

Takeoff Height
Although the takeoff and climb is one continuous maneuver, it will be divided into three separate steps for purposes of explanation: 1.) takeoff roll; 2.) lift-off; and 3.) initial climb after becoming.