American Airlines flight AA-730 had to return and make an emergency landing in Charlotte, North Carolina, on December 1st.
The Airbus A330-300 plane took off for Heathrow Airport, United Kingdom, but had to return shortly afterwards due to engine vibrations.
The plane landed back uneventfully. All 229 people aboard remained safe.
Vietnam Airlines flight VN-249 had to return and make an emergency landing at Noi Bai International Airport, Hanoi, Vietnam, on August 15.
The Boeing 777-200 en-route to Ho Chi Minh City, Vietnam, had to return due to engine problem. The crew had to shut its engine down mid-air.
The plane landed safely.
All 229 people aboard remained unhurt.