12/31/2015 11:57 EST | Updated 12/31/2015 11:59 EST

TSB Reminds Air Passengers To Wear Seatbelts After Turbulence Scare

CALGARY — The Transportation Safety Board is reminding air passengers to wear their seatbelts after 21 people on an Air Canada flight that landed in Calgary were injured by turbulence.

The agency posted the warning on Twitter Thursday and followed it up with another tweet linked to a report about 16 passengers and crew being injured on an Air Canada flight in 2011.

In that case a Boeing 767 flying over the North Atlantic pitched up and down for 46 seconds as it dodged another aircraft.

The report notes that some passengers were not buckled up despite being briefed to wear their seatbelts, and that the seatbelt sign was on at the time.

The safety board investigation found that some passengers may not be aware of the inherent risks of not wearing a seatbelt at all times when seated.

The TSB is investigating Wednesday's mishap that sent 21 people, including three children, to hospitals with injuries ranging from minor sprains to serious chest and neck trauma.

The Boeing 777 was en route from Shanghai to Toronto when it hit severe turbulence and was diverted to Calgary.

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