What is the approximate total distance required to land over a 50-foot obstacle at an outside air temperature of 90°F?

The total distance required to land over a 50-foot obstacle is influenced by several factors, including aircraft weight, altitude, wind conditions, and, critically, outside air temperature. At higher temperatures, such as 90°F, aircraft performance is generally reduced due to decreased engine efficiency and reduced air density. This means that the required landing distance can increase notably.

In the context of the question, the selection of about 1,775 feet as the total distance needed to land over a 50-foot obstacle reflects an understanding of these performance characteristics during hot weather. Pilots must consider that the takeoff and landing performance data in their flight manual is often calculated under standard conditions, which may not apply in warmer temperatures.

By accounting for these factors, 1,775 feet is a realistic figure based on typical performance charts and guidelines that would reflect the additional distance a pilot might need for a safe landing when factoring in the impact of a 90°F temperature. This approach ensures safety and conserves the appropriate distance to maneuver over obstacles during landing.