Which factor would NOT typically affect takeoff performance?

The factor that would not typically affect takeoff performance is the type of pilot training. While the skills, knowledge, and decision-making abilities of a pilot are certainly vital for safe and effective operation of an aircraft, they do not directly influence the physical performance characteristics such as required takeoff distance, lift generated, or necessary speeds.

Takeoff performance is primarily determined by aerodynamic factors and environmental conditions. For example, the weight of the aircraft plays a crucial role, as a heavier aircraft requires a longer distance to reach the necessary speed for takeoff. Wind speed and direction also significantly impact performance; headwinds can aid takeoff by reducing the required ground speed, while tailwinds may increase it. Additionally, the condition of the runway surfaces, such as being wet, icy, or uneven, affects friction and drag, thereby influencing the aircraft's ability to accelerate effectively during the takeoff roll.

In summary, while pilot training is essential for safe operations, it does not alter the fundamental aerodynamic and environmental factors that dictate aircraft performance during takeoff.