What are the consequences of exceeding Vmc?

Exceeding Vmc, or minimum control speed, can lead to loss of control and an inability to maintain directional stability. Vmc is the speed at which a single-engine aircraft can maintain controlled flight with one engine inoperative. If the aircraft is operated above this speed with one engine malfunctioning, it may become impossible to maintain controlled flight, leading to a yawing motion towards the inoperative engine. This loss of directional control can result in a dangerous situation, potentially leading to a spin or other forms of uncontrolled flight.

The other options do not accurately reflect the consequences of exceeding Vmc. Improved fuel efficiency, increased lift, and enhanced agility do not occur when operating outside of safe speed parameters and do not contribute positively to the aircraft's handling characteristics, particularly in engine-out scenarios. Understanding Vmc and its implications is crucial for ensuring safety in flight operations.