Air Transat flight TS-436 had to return and make an emergency landing in Montreal, Quebec, Canada, on March 18th.
The Airbus A330-300 took off for Cancun, Mexico, but had to return shortly afterwards due to an indication of low hydraulic quantity.
The plane landed uneventfully. There were 366 passengers and 12 crew members aboard at the time; all of them remained safe.
The airline arranged a replacement plane for the passengers.