KLM Cityhopper flight KL-1345 had to return and make an emergency landing at Amsterdam Airport Schiphol, the Netherlands, on December 30th.
The Embraer ERJ-190 en-route to Billund, Denmark, had to return due to airframe vibrations.
The plane landed safely.
Everyone aboard remained unhurt.

Wizz Air flight W6-4551 had to reject takeoff at Burgas Airport, Burgas, Bulgaria, on September 16th.
American Airlines flight AA-728 had to make an emergency landing at Heathrow Airport, United Kingdom, on January 7th.