Lufthansa flight LH-1814 had to return and make an emergency landing at Munich Airport, Germany, on March 11th.
The Airbus A321-100 flying to Barcelona, Spain, had to return due to some problem with its air conditioning system.
The plane landed safely.
All people aboard remained safe.
Air Astana flight KC-151 had to return and make an emergency landing in Astana, Kazakhstan, on June 16th.
The Embraer ERJ-190 plane took off for Bishkek, Kyrgyzstan, but had to return shortly afterwards due to failure of the cabin air conditioning system.
The plane landed uneventfully. Everyone aboard remained safe.
ANZ Air New Zealand flight NZ-992 had to return and make an emergency landing at Auckland Airport, Auckland, New Zealand, on May 7th.
The Airbus A320-200 was mid-air when it had to enter a hold due to problem with its air conditioning.
The plane landed safely.
No injuries were reported.
WestJet flight 662 had to return and make an emergency landing in Calgary, Alberta, Canada, on February 3rd.
The plane took off for Toronto, Ontario, Canada, but had to turn back after smoke was observed coming from the air conditioning system.
The plane landed safely. All 132 passengers aboard remained unharmed.
Alaska Airlines flight AS-322 had to make an emergency landing in San Jose, California, on January 12th.
The pilots declared an emergency after the crew noticed a white powder leaking from the cabin air conditioning vents and three of them reported feeling unwell. The Boeing 737-900 plane was flying from Seattle, Washington, at the time.
The plane landed safely. One crew member was taken to hospital while two others received treatment at the airport. All 181 passengers remained unharmed.
It is believed that the white substance was a de-icing agent.
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.
KLM flight KL-1072 had a cabin pressure problem shortly after it took off from Manchester, United Kingdom, on April 9th.
The Boeing 737-900 plane was heading to Amsterdam, Netherlands, when it experienced problems with cabin pressure. According to the airline, the oxygen masks were released for the passengers and the crew was able to restore the air conditioning system after around 13 minutes.
The plane landed safely. All 138 passengers aboard remained unhurt.
Safair flight FA-136 had to return and make an emergency landing at Cape Town International Airport, South Africa, on March 6.
The Boeing 737-400, heading from Cape Town, to Port Elizabeth, was mid air when it had to return due to some issue with its air conditioning system.
The plane landed safely.
All passengers and crew member aboard remained unhurt.
Air Canada flight 549 made an emergency landing in Toronto, Canada, on January 29.
The plane, en-route from Newark, New Jersey, to Vancouver, Canada, was diverted after it lost cabin pressure due to a fault in an air conditioning unit.
The Airbus A319 plane landed safely. All 107 passengers aboard remained unhurt.
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.
