On November 2nd, 2013, the two Skydive Superior Cessnas (Cessna A185F Skywagon #WN94059, Cessna 182 #N6068Y) were flying over Wisconsin when one flew into another, forcing eleven people into emergency mode. Two pilots and nine skydivers made it to the ground alive, though part of the plane was described as breaking off into a fireball of burning debris that the skydivers had to avoid while they were coming down. The nine skydivers had been planning a tandem jump.
The Skywagon encountered wake turbulence, which lead to the collision and breakup of the lead aircraft.
Four jumpers were aboard the lead plane that broke apart.
One plane broke up and burned; the other pilot managed to land. The pilot of one plane used his emergency parachute and was injured enough on landing that he was hospitalized. The other managed to land at the airport, albeit with a broken wing and propeller.
The FAA is investigating.