Private Pilot Private Exam

Which factor increases the risk of a stall in a loaded airplane?

1. Wind shear

2. Increased load factor

3. High temperature

4. Excessive fuel load

The correct answer is: Increased load factor

The factor that increases the risk of a stall in a loaded airplane is an increased load factor. When an aircraft experiences a higher load factor, the angle of attack must be increased to maintain level flight, which can bring the aircraft closer to its critical angle of attack. As the load factor increases—such as during turns, climbs, or when maneuvering—effective weight increases, requiring the pilot to manage the aircraft's performance more carefully. If the angle of attack exceeds the critical point while the aircraft is heavily loaded, it can lead to a stall condition. Other factors like wind shear can affect flying conditions but don't directly impact the fundamental aerodynamic relationship that leads to stalls. High temperatures can reduce engine performance and lift, but they don't inherently increase the stall risk in the same way that load factor does. An excessive fuel load may also contribute to weight, but it is the concurrent increased demands on the aircraft's control and performance during maneuvers that are more critical for stall risk.