Accident Description
A single-engine aircraft departed Stockholm-Bromma Airport runway 12 at 0703 local time on a charter flight to Biggin Hill, carrying two passengers and one pilot. During the climb, at an altitude of 1,500 feet, the pilot was cleared to turn right and continue climbing to flight level 040. At an altitude of 2,200 feet, the aircraft entered an uncontrolled descent, partially disintegrated in mid-air, and crashed in a residential area in Åkeslund, south of the airport. The accident occurred three minutes after takeoff.
Weather Conditions
At the time of the accident, weather conditions were marginal, with clouds and turbulence present.
Aircraft Damage and Ground Impact
The aircraft was destroyed. Several cars and apartments in the residential area were destroyed, but no injuries were reported on the ground.
Occupant Fatalities
All three occupants on board—two passengers and one pilot—were killed in the accident.
Probable Cause
The official investigation determined that the aircraft was operated at a speed 30% above the maneuverable speed when, in turbulence, the left wing broke away due to excessive g-loads. This led to an uncontrolled descent and partial disintegration before final impact. A probable disconnection or malfunction of the gyro horizon/automatic pilot system, as well as incorrect trim input by the pilot, were considered as contributing factors.