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Multiple Choice

What differentiates a stall from a spin, and what typically triggers a spin?

The main idea is that a stall is about lifting capability, while a spin is about rotation after a stall. A stall happens when the wing’s angle of attack gets high enough that the airflow separates from the wing, causing a loss of lift. It can occur in straight or turning flight and is not inherently about yaw or rotation. A spin is an aggravated stall that develops a yawing motion around the vertical axis because one wing stalls more than the other. This asymmetric stall creates autorotation and a steep, downward descent. Spins typically start from a stall in which control inputs are not coordinated—often too much back pressure with insufficient opposite rudder in a turn—so the airplane begins to yaw and roll into a spin. The other options don’t fit: engine failure isn’t what defines a stall, and a spin isn’t simply a stall occurring in a turn. Spins aren’t restricted to low altitude or unaccelerated flight, and a heavy load isn’t what distinguishes a stall from a spin.

The main idea is that a stall is about lifting capability, while a spin is about rotation after a stall. A stall happens when the wing’s angle of attack gets high enough that the airflow separates from the wing, causing a loss of lift. It can occur in straight or turning flight and is not inherently about yaw or rotation.

A spin is an aggravated stall that develops a yawing motion around the vertical axis because one wing stalls more than the other. This asymmetric stall creates autorotation and a steep, downward descent. Spins typically start from a stall in which control inputs are not coordinated—often too much back pressure with insufficient opposite rudder in a turn—so the airplane begins to yaw and roll into a spin.

The other options don’t fit: engine failure isn’t what defines a stall, and a spin isn’t simply a stall occurring in a turn. Spins aren’t restricted to low altitude or unaccelerated flight, and a heavy load isn’t what distinguishes a stall from a spin.