What is the ground roll required for takeoff over a 50-foot obstacle at a temperature of 80°F and pressure altitude of 2,000 ft, with a weight of 3,200 lb?

To determine the ground roll required for takeoff over a 50-foot obstacle at the specified conditions—80°F temperature, 2,000 feet pressure altitude, and a weight of 3,200 pounds—one must consider several factors, including aircraft performance charts, density altitude, and the effect of weight and environmental conditions on takeoff distance.

At 2,000 feet pressure altitude, the aircraft's performance may be affected by reduced air density, which decreases engine performance and aerodynamic efficiency. The temperature of 80°F can also contribute to an increase in density altitude. These factors together indicate that the ground roll will be longer than standard conditions at sea level.

The weight of the aircraft plays a significant role in determining takeoff distance. At 3,200 pounds, the aircraft will require more runway length to develop the necessary lift to clear the 50-foot obstacle than it would at a lighter weight.

Given these conditions and the need to clear a 50-foot obstacle, the calculated ground roll that aligns with expected performance outcomes based on similar flight conditions and aircraft specifications indicates that around 900 feet is required. This understanding aligns with performance charts typically provided for the aircraft type being considered, which take into account the weight, altitude, temperature, and any