Uploaded May 2026 | Updated September 2026, 1 week ago

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DPEs seem to love asking about these on checkrides.
These are called Frise-type ailerons.

When the aileron moves up, part of its leading edge hangs down into the airflow to help reduce adverse yaw and improve control feel.

It’s one of those small aerodynamic details that a lot of student pilots fly past without realizing.

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