LOT Polish Airlines flight LO-3944 had to return and make an emergency landing at Poznan-Lawica Henryk Wieniawski Airport, Poznan, Poland, on December 31.
The De Havilland Dash 8-400, flying from Poznan, to Warsaw, Poland, was mid-air when it encountered some problem with its air conditioning systems, causing it to return.
The plane landed safely.
All passengers on board remained safe.