What is the first action to take when experiencing sudden turbulence?

When experiencing sudden turbulence, the first action to take is to discontinue service and secure carts. This is critical for ensuring safety. During turbulence, there is a risk of injury to both crew members and passengers if service continues, especially if food and beverage carts are still in use, as they can become hazardous projectiles. Securing these items minimizes the chances of accidents and ensures that the cabin is prepared for any sudden movements of the aircraft.

Taking this action right away allows for a safer environment as the aircraft navigates through turbulence. It also helps in maintaining an orderly cabin, so everyone is secure and can brace themselves for the duration of the turbulence.