What is the approximate total distance required to land over a 50-foot obstacle at a pressure altitude of 4,000 ft with a headwind component of 10 kts?

To determine the total distance required to land over a 50-foot obstacle at a pressure altitude of 4,000 feet with a headwind component of 10 knots, it is important to understand how these factors influence landing performance.

At a pressure altitude of 4,000 feet, the aircraft’s performance, including the approach and landing distances, will be affected due to reduced air density. Air density decreases with altitude, which can increase the landing distance since it affects engine performance and aerodynamic lift. However, the presence of a headwind component of 10 knots helps reduce the ground speed needed for landing, thereby making landing more efficient.

When calculating the total distance required to land over an obstacle, one must consider both the approach distance and the distance from touchdown to the point of overcoming the obstacle. A headwind effectively decreases the distance needed to reach the specified altitude over the obstacle, as it allows the aircraft to maintain a lower ground speed.

The estimated landing distance in this scenario, taking into account the combined effects of the altitude and the headwind, aligns with a total distance of approximately 1,775 feet. This reflects a careful interaction between the reduced lift due to the higher altitude and the benefits of the headwind, optimizing the landing approach.