What: Mesaba/Delta CRJ 200 en route from Minneapolis to Dayton
Where: Dane County Regional Airport, Madison
When: Jan 7 2011
Who: 40 passengers
Why: While en route, the plane developed engine trouble.
One of the engines displayed an emergency warning and had to be shut down.
The pilot landed safely in Madison. Passengers disembarked normally.

Transavia flight HV-5807 had to return and make an emergency landing at Amsterdam Airport Schiphol, Netherlands, at May 28th.
Spirit Airlines flight NK-711 had to return and make an emergency landing in Las Vegas, Nevada, on February 4th.
Vueling flight VY-2151 made an emergency landing in Brussels, Belgium, on July 9th.