Discussion
If the yaw damper of a swept-wing transport fails in the cruise, the crew should expect
Answer: B
The bare airframe's Dutch roll damping is what the damper was supplying, so the crew sees a lightly damped yaw and roll oscillation that persists after every gust, usually with a procedural requirement to descend or reduce speed. The spiral is a separate root and is not held by the damper. Roll control is unaffected, since the ailerons are independent of it. The short period is longitudinal and cannot be influenced by a rudder loop at all.
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