Thomas Cook Airlines flight MT1054 had to return and make an emergency landing in East Midlands, England, on July 9th.
The Airbus A321-200 plane took off for Larnaca, Cyprus, but had to return shortly afterwards due to issues with the onboard computers.
The plane landed back safely. All passengers and crew members remained unharmed.
United Airlines flight UA-789 had to return and make an emergency landing at Portland International Airport, Oregon, on October 13th.
The Boeing 737-900 plane took off for Denver, Colorado, but had to return shortly afterwards due to an electrical smell onboard.
The plane landed safely. There were 177 people aboard at the time; all of them remained unhurt.
American Airlines flight AA-56 had to return and make an emergency landing in Miami, Florida, on September 2nd.
The Boeing 777-200 plane took off for Heathrow Airport, London, United Kingdom, but had to return shortly afterwards due to an unusual smell onboard.
The plane landed uneventfully. Everyone aboard remained safe.
The airline arranged a replacement plane for the passengers.