What: Delta Airlines Boeing 767-300ER en route from Atlanta to
Where: Atlanta
When: August 25, 2012
Who: 180 aboard
Why: After take-off, the plane developed problems with the leading-edge slats, which could not be retracted. Pilots returned to Atlanta where the flight maintained for 3.5 hours at 10,000ft, dumped and burn-off fuel.
At 23:10, the flight made a slats-but-no-flaps landing, after which passengers disembarked. There were no injuries. Passengers were provided an alternative flight.

American Airlines flight AA-984 had to divert and make an emergency landing in Bogota, Colombia, on October 4th.
Southwest Airlines flight WN-3095 suffered a bird strike near Baltimore, Maryland, on March 17th.