Which consequence results when an aircraft's autopilot suffers a runaway trim due to a servo motor failure?

💡 Explanation

Uncontrolled elevator deflection occurs because servo motor failure causes uncommanded movement via the **trim actuator mechanism**. This results in large variations in pitch and potentially a stall; therefore the elevator deflects abruptly rather than smoothly correcting flight path.

• In reinforced concrete columns under compression, which mechanism causes spalling of the concrete?
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