What occurs when the LH or RH ENG FIRE PUSH button is pressed?

When the LH or RH ENG FIRE PUSH button is pressed, the fuel shutoff valve closes and the squibs are armed. This action is a critical safety feature in aircraft designed to respond to an engine fire. By closing the fuel shutoff valve, the flow of fuel to the engine is stopped, thus minimizing the risk of fire spreading or reigniting if it is already present. Arming the squibs ensures that, if necessary, the fire extinguishing agents can be discharged into the engine compartment to effectively combat the fire.

This response is designed to immediately address potential life-threatening situations by cutting off fuel supply and enabling fire suppression measures. Such coordinated actions are essential in maintaining safety during flight operations.