Terrifying moment passenger films smoke pouring from the wing of his plane

Video has captured the terrifying moment fuel began pouring from the wing of a plane mid-flight.
Boston resident Josh Jacobs was aboard the Shanghai-bound flight when it was forced to make an emergency landing in Montreal on Saturday.
'Already a few moments after take off, we knew something wasn't working right,' Jacobs told CBC.
His fellow passengers aboard flight AC017 reported hearing strange sounds as the plane took off.
Airline officials said a warning light came on in the cockpit of the Boeing 787, so they followed procedure by shutting down the engine and dumping the fuel. They also contacted the teams on the ground to let them know they were in trouble.
Video captured by Jacobs' cellphone shows the moment the plane dumped the fuel, as smoke is seen billowing out of the jet's wing.
'Glad 2b back @aeroportsMTL @AirCanada #YUL-PVG engine fail on takeoff. Engine shutdown, fuel dump: professional response,' he tweeted after landing.
However, he said the captain was quick to make an announcement to let passengers know the move was standard emergency protocol.
The Air Canada jet made an emergency landing in Montreal without incident. The 213 passengers were able to board another Shanghai-bound flight later that day.
'Our technical team will proceed with an inspection of the engine to determine the cause of the incident,' said Isabelle Arthur, a spokesperson for Air Canada.