Turbulence is common when flying, but deaths as a direct result are rare on airlines around the world.

A US plane was forced to land at Bradley International Airport in Connecticut on March 4, local time, after a violent turbulence caused the death of one passenger.

A spokesman for the National Transportation Safety Board said the jet was flying from New Hampshire to Virginia,Five passengers were affected by the turbulence and one was taken to hospital where he later died.

Why does flying experience turbulence? What should passengers do when they encounter turbulence? The plane was moving through the air at high speed, the Civil Aviation Network of China previously reported. When the air flow is smooth, the aircraft can maintain its speed, altitude and heading, and passengers can hardly feel the movement of the aircraft.

However, if an aircraft flies into turbulent air flow, the turbulent air flow can change the aircraft's flight status. The change in flight status caused by this turbulence is the turbulence that passengers feel on the plane. Therefore, turbulence or unstable airflow is the main cause of aircraft turbulence.

As a passenger, the most important way to deal with turbulence is to stay seated and fasten your seat belt.It's important to keep your carry-on luggage from being too heavy, as airplane overhead bins have weight limits.

During strong turbulence, heavy luggage may push the luggage rack beyond its designed limit, causing the suitcase to collapse and injure the passenger. In addition, some unsecured objects around the passenger may also cause injury, so try to secure them.