United Airlines flight UA-2160 made an emergency landing at Newark-Liberty International Airport, New Jersey, on May 22nd.
Emergency services were requested after the tower noticed smoke emanating from one of the engines of the Boeing 757-200 plane coming from San Francisco, California.
The passengers disembarked onto the taxiway. No injuries were reported.

Blue Air flight 0B-2931 had to return and make an emergency landing in Bacau, Romania, on August 10th.
Southwest Airlines flight WN-50 had to divert and make an emergency landing at Mid Continent Airport in Wichita, Kansas, on April 10th.