A British academic who fell asleep during a flight woke up in an aircraft hangar after cabin crew mistakenly left him on the plane. […] Mr Lines said ground staff took a copy of his boarding pass before arranging for him to be transferred back to the terminal. He said: “It was all low-key, we had a laugh and a joke about it. But the crazy thing is that when you fly they have got so many security checks, and yet they left me alone in a secure area for an hour and a half. “My bag was even waiting on the conveyor belt. If it was in the UK and there was a suitcase left unclaimed in a building, most times it would be blown up.” He said he wrote to Air Canada to warn them about the “huge problem in their security”, but was simply told cabin crew had been concentrating on getting wheelchair users off the plane when it landed and had not walked down the aisle to check the rest of the cabin was clear.