An Air Canada flight had to return to Toronto's Pearson airport Friday night due to engine trouble.
Air Canada says emergency vehicles were on standby as Flight AC476 landed normally.
The flight bound for Ottawa had 175 passengers on board.
Air Canada says the pilots of the Boeing 767 detected an engine anomaly and the plane is being inspected by maintenance crews.
The plane experienced a surge in an engine, which is similar to a car backfiring. Despite the flames and smoke that can result it is not considered to be dangerous.
Several people contacted our sister station CP24 reporting seeing the plane in the sky with flames shooting out from one of the engines.
With files from CP24