What happens when the C-switch reaches 106%?

When the C-switch reaches 106%, it activates a safety feature designed to protect the engine from potential damage due to high RPMs. At this point, cutting off fuel flow to the combustion chamber is critical to prevent further increase in RPM that could lead to catastrophic engine failure.

This action is a protective measure embedded in the engine control systems to ensure operational safety and reliability. Maintaining control over the fuel flow is an effective way to stabilize engine performance and protect components from excessive stress.

In this scenario, the other choices may imply actions related to engine management, but they do not directly correlate with the function of the C-switch at the specified threshold of 106%. Thus, cutting off fuel flow directly addresses the potential risk posed by exceeding safe operational limits.