What procedure should be followed in the event of smoke in the cockpit?

In the event of smoke in the cockpit, the most critical and immediate action is to don oxygen masks and initiate emergency procedures for smoke control. This step is essential because it ensures that the flight crew has a supply of breathable air, which can be compromised in a smoke-filled environment. The use of oxygen masks protects the pilots from inhaling harmful smoke, allowing them to maintain situational awareness and control of the aircraft.

Following this, the crew can address the source of the smoke and begin implementing other necessary emergency procedures. This may include identifying the specific cause of the smoke, communicating with air traffic control, and preparing for possible emergency landing procedures.

While other actions such as activating the fire suppression system, changing altitude, or opening windows might seem plausible, they do not provide the immediate protection that oxygen masks do. These actions might be necessary later but maintaining a clear and functional cockpit environment is the priority when smoke is present. Thus, prioritizing the donning of oxygen masks is the most effective and safe first step in responding to smoke in the cockpit.