In the case of engine failure at cruise altitude, what is the first action a pilot should take?

Establishing the best glide speed is the critical first action during an engine failure at cruise altitude. When an aircraft loses engine power, the primary concern is maintaining control and optimizing the aircraft's glide performance to maximize the distance you can cover before landing. By flying at the best glide speed, the pilot ensures that the aircraft remains at the optimal angle of attack for maximum lift-to-drag ratio, thereby extending the time and distance that can be covered during the descent.

The best glide speed allows the pilot to maintain control of the aircraft, gives more time to assess the situation, and enables strategic planning for a potential emergency landing. This action is essential because, in the event of an engine failure, managing the aircraft’s energy becomes paramount to achieving a safe outcome.

While notifying air traffic control, checking fuel levels, or performing a 180-degree turn may be important in the overall management of the emergency, these actions can only be executed effectively if the aircraft is in a controlled glide. Prioritizing aircraft control and optimizing glide performance is fundamentally crucial in handling an engine failure scenario.