What is the approximate total distance required to land over a 50-foot obstacle at a pressure altitude of 4,000 feet?

To determine the total distance required to land over a 50-foot obstacle at a pressure altitude of 4,000 feet, one must consider factors such as aircraft type, weight, approach speed, flaps configuration, and environmental conditions like temperature and wind.

The correct choice, which states an approximate distance of 1,775 feet, is consistent with landing performance charts that typically account for higher altitude airfields. At elevated pressure altitudes, aircraft performance can degrade due to thinner air, which affects lift and drag characteristics. This results in needing a longer landing distance to clear obstacles.

In this case, the value of 1,775 feet represents a calculated safe margin that considers the necessary distance to safely clear the obstacle while allowing for the performance limitations that come into play at 4,000 feet. The landing distance required can extend significantly from baseline values usually found at sea level. Therefore, the selection of this distance would provide an appropriate guideline for pilots to ensure safe landings in such conditions.