City jet flight WX-112/AF-3141 had to return and make an emergency landing at Dublin Airport, Ireland, on May 20th.
The Avro RJ-85, en-route to London City, UK, had to return due to low oil pressure. The crew had to shut down one of its engines mid-air.
The plane landed safely.
No injuries were reported.

JetBlue flight B6-218 made an emergency landing at Raleigh–Durham International Airport, North Carolina, on July 26th.