Doug Moss: former airline pilot and safety consultant warns flights with dangerous turbulence could be more common - Heather du Plessis-Allan Drive

One expert has warned flights with severe turbulence could become more common, due to climate change.

Overnight, one person was killed and several were injured after a Singapore Airlines flight hit turbulence and descended 1,800 meters in three minutes.

Former airline pilot and safety consultant Doug Moss says clear air turbulence is difficult to detect - and it often catches pilots by surprise.

"For the passengers, it'll feel like hitting a speed bump on the road."

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