Pegasus Airlines flight PC-327 made an emergency landing in Stuttgart, Germany, on May 3rd.
The plane, flying from Izmir, Turkey, declared an emergency due to an air-conditioning failure.
The plane landed uneventfully after the crew initiated an emergency descent. The passenger oxygen masks were deployed.

Allegiant Air Flight 500 had to make an emergency landing at McCarran International Airport in Las Vegas, Nevada, on June 22nd.
JetBlue Airways flight B6-658 had to divert and make an emergency landing in Orlando, Florida, on February 2nd.
Aer Lingus flight EI-911 had to divert and make an emergency landing in Dublin, Ireland, on August 6th.
A Scandinavian Airlines flight had to return and make an emergency landing at Munich International Airport, Germany, on March 24th.
British Airways flight BA-292 made an emergency landing at Shannon Airport, Ireland, on November 27th.