What should be done first if you inadvertently enter a thunderstorm?

When you inadvertently enter a thunderstorm, the immediate priority is to ensure the safety of yourself and any passengers on board. Tightening your seatbelt and securing loose objects is the first critical step because it helps to prevent injuries caused by turbulence or sudden movements of the aircraft. Thunderstorms can produce severe turbulence, which can lead to abrupt changes in altitude or direction. Securing loose items also minimizes the risk of them becoming projectiles that could harm individuals on board.

Once you are secured, you can then consider other actions to safely navigate out of the hazardous situation. While lowering altitude and activating the autopilot may seem like reasonable responses, they could be risky maneuvers in turbulent conditions. Attempting to turn around immediately can lead to disorientation and potentially worsen an already dangerous situation as well. Thus, the best initial action focuses on personal safety and cabin security.