FedEx flight 3606 had to return and make an emergency landing at Salt Lake City International Airport, Utah, on December 22.
The plane took off for Indianapolis, Indiana, but had to return shortly afterwards due to indication of smoke in the cargo hold.
The plane landed safely. Everyone aboard remained unharmed.

Air Astana flight KC-857 had to return and make an emergency landing in Almaty, Kazakhstan, on April 25th.
Southwest Airlines flight WN-441 had to return and make an emergency landing in Seattle, Washington, on October 19th.