Remove Clearance Remove Indicated Airspeed Remove NOTAMs
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Danger lurks in circling approaches

Air Facts

Any NOTAMS applicable? If you depart MDA on the downwind or base leg, you’re on your own as far as obstacle clearance. What specific indicated airspeed will be flown/adhered to during the circling maneuver? Be fully configured and on speed prior to receiving landing clearance. What speed on final approach?

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What Is Air Density? A Simple Guide for Pilots

Pilot Institute

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. High-density altitude, on the other hand, indicates thin air.