Scandinavian Airlines System Flight 686, a McDonnell Douglas MD-87 airliner carrying 110 people bound for Copenhagen, Denmark, collided on take-off with a Cessna Citation CJ2[1]: 1  business jet carrying four people bound for Paris, France, on 8 October 2001 at Linate Airport in Milan, Italy.

[3][4][5] The subsequent investigation determined that the collision was caused by several nonfunctioning and nonconforming safety systems, standards, and procedures at the airport.

The captain, 36-year-old Horst Königsmann, had approximately 5,000 total flight hours logged, of which roughly 2,400 were accumulated in the Citation.

One of the four people in the Cessna was killed on impact; the remaining three initially survived the crash but died from burn injuries.

The MD-87 lost its right engine; the pilot, Joakim Gustafsson, attempted to take off, reaching an altitude of approximately 12 metres (40 ft).

This was insufficient to halt the jet's momentum, and it crashed into a luggage hangar located near the runway's end, at a speed of approximately 136 knots (252 km/h; 157 mph).

[8] Of the occupants of the MD-87, 54 (46%), mainly in the back of the aircraft, suffered severe burns; their bodies were identified using forensic dentistry or DNA records.

The ANSV's final report was published on 20 January 2004 and concluded that the "immediate cause" of the accident was the incursion of the Cessna aircraft onto the active runway.

When they stopped at a taxiway stop-marking, and correctly reported its identifier, S4, the ground controller disregarded this identification because it was not on his maps and was unknown to him.

The ground controller's verbal directions used terminology to designate aprons, taxiways, and runways, which did not match their on-the-ground signage and labels.

Airport director Vincenzo Fusco and air-traffic controller Paolo Zacchetti were both sentenced to eight years in prison.

[24] A sculpture by the Swedish artist Christer Bording donated by SAS, called Infinity Pain, was placed in the centre of the forest.

[25] The disaster devastated the Swedish go-kart community as some of the country's most promising young drivers were on the flight after attending an event in Parma.

[26] In 2012 the accident was featured on the 11th season of the Discovery Channel Canada / National Geographic TV series Mayday, in an episode entitled "The Invisible Plane".