Norwegian Air Shuttle flight DY-1156 had to return and make an emergency landing in Oslo, Norway, on January 27th.
The Boeing 737-800 plane took off for Munich, Germany, but had to turn back due to an issue with the toilets.
The plane landed back safely. All passengers and crew members remained unharmed.

China Southern flight CZ-3510 made an emergency landing in Hefei, China. On August 2nd.
American Airlines flight AA-60 encountered turbulence on the way to Dallas/Fort Worth International Airport, Texas, on June 10th.