In the event of an engine fire on the ground and the engine does not start, what should you do?

In the event of an engine fire on the ground where the engine does not start, it is crucial to take specific actions to mitigate the situation effectively.

The first step involves reducing the fuel flow and ignition to prevent further fueling of the fire. This is done by throttling to idle cut-off, which stops the fuel flow from the tanks to the engine. By also shutting off the fuel and ignition switches, you further minimize the potential for combustion, addressing the fire at its source. Both actions are essential components in fire safety protocols and should be executed swiftly.

Engaging carburetor heat is typically used to prevent ice formation in the carburetor and is not an effective or safe method to extinguish a fire. Instead, the focus should be on stopping fuel feed and the ignition source, leading to the combination of actions A and B being the appropriate response in this scenario.