What is the approximate ground roll distance required for takeoff at 2,000 ft pressure altitude with a temperature of 100°F?

To determine the approximate ground roll distance required for takeoff under the specified conditions, it is important to consider the effects of pressure altitude and temperature on aircraft performance. At a pressure altitude of 2,000 feet and a temperature of 100°F, the aircraft will experience reduced engine performance and lift due to the lower air density associated with higher altitude and elevated temperature.

Typically, the ground roll distance increases under these conditions because the aircraft requires a longer distance to achieve the necessary speed for takeoff. That is primarily due to the reduced thrust from the engine and decreased aerodynamic efficiency. The performance charts specific to the aircraft model would provide guidance on the expected ground roll distance given certain altitude and temperature inputs.

In most cases for a moderate-sized general aviation aircraft, the expected ground roll distance required at decreased air density conditions (like 2,000 feet and 100°F) approximates around 1,300 feet. This is a compromise taking into account both the pressure altitude and the temperature impact on performance, resulting in a longer ground roll than at sea level and standard temperatures.

Thus, 1,300 feet aligns well with performance calculations for normal takeoff distances in these conditions, making it the most fitting choice.