Air Canada flight AC-877 had to return and make an emergency landing in Frankfurt, Germany, on May 15th.
The Boeing 777-300 plane took off for Toronto, Canada, but had to turn back due to a hydraulic failure.
The plane landed back safely. All passengers and crew members remained unharmed.

SriLankan Airlines flight UL-166 made an emergency landing in Colombo, Sri Lanka, on July 30th.
Qantas Airways flight QF-495 made an emergency landing in Melbourne, Australia, on April 7th.