What is the minimum ground roll required to clear a 50-foot obstacle at a pressure altitude of seabed level with a weight of 3,000 lb?

The correct answer reflects the minimum ground roll required for an aircraft to safely clear a 50-foot obstacle at a given weight and pressure altitude. When determining this ground roll distance, various factors such as aircraft weight, air density at pressure altitude, and the specific aircraft performance characteristics come into play.

At a pressure altitude of sea level, the air density is optimal for generating lift and engine performance. The weight of 3,000 lbs also indicates that the aircraft is likely operating near its takeoff weight, which affects the takeoff distance required to achieve sufficient speed for obstacle clearance.

The performance charts provided in the aircraft’s Pilot Operating Handbook (POH) or Operating Limitations are utilized to find the takeoff distance required under specific conditions, including the need to clear a 50-foot obstacle. Based on these charts, the distance calculated to meet these criteria would yield the minimum ground roll needed to safely clear the obstacle, which in this case is 800 feet.

This demonstrates how taking into account both the specific operational conditions (weight and altitude) and utilizing the appropriate performance charts lead to determining the correct minimum ground roll for obstacle clearance.