What must be performed first when responding to an AMAD/Engine Bay fire?

When responding to an AMAD (Accessory Module and Drive) or engine bay fire, the most critical first step is to ensure that the engine is shut down. This action is essential because shutting down the engine helps to eliminate the fuel source that may be contributing to the fire, potentially preventing its spread and making the situation more manageable.

In high-stress emergency situations, it is vital to prioritize actions that can mitigate further danger. Ensuring the engine is off is a preventive measure that assists in protecting personnel, aircraft, and equipment from additional harm.

Opening emergency exits, signaling the ground crew, or checking fuel levels are important steps but are secondary to shutting down the engine. The other options may help with the subsequent response efforts, but they do not immediately address the fire hazard that the active engine poses in the event of a fire.