United airlines flight UA-872 made an emergency landing in Anchorage, Alaska, on March 27th.
The Boeing 777-200 plane, heading from Taipei, Taiwan, to San Francisco, California, had to be diverted due to severe vibrations in its left engine.
The plane landed safely. No injuries were reported.

LOT Polish Airlines flight LO-3825 had to return and make an emergency landing in Warsaw, Poland, on August 20th.
Air Algerie flight AH-1020 had to return and make a precautionary landing at Algiers International Airport, Algiers, Algeria, on August 6th.

Emirates flight EK-507 had to make an emergency landing in Dubai, United Arab Emirates, on June 9th.