Clearance Indicated Airspeed Thrust 
Air Facts
MAY 10, 2024
For example, some aircraft limit flaps and gear in icing until on approach or forbid the use of speed brakes or require a minimum thrust setting. Particular attention to true airspeed vs. turn radius. If you depart MDA on the downwind or base leg, you’re on your own as far as obstacle clearance. What speed on final approach?
Pilot Institute
MARCH 26, 2025
These include lift, propeller thrust, and engine combustion. For example, if we were to takeoff on an airfield at sea level at 0C (32F), it would take 1520ft to reach our obstacle clearance height of 50ft. Whereas for the same airfield on a different day, if it were 30C (86F), that same obstacle clearance height would take 1880ft.
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