Accident
An aircraft on a scheduled Linjeflyg flight from Kristianstad to Stockholm-Bromma, with intermediate stops in Växjö and Jönköping, crashed during approach to Bromma Airport. The accident occurred in the residential area of Kälvesta, approximately 4.5 kilometers short of runway 12 threshold. The aircraft carried 19 passengers and a crew of three.
Sequence of Events
On approach, the crew encountered marginal weather and icing conditions. At an altitude of 1,150 feet and a speed of 137 knots, the flaps were deployed to an angle of 40° when control was lost. The airplane entered a nose-down attitude and crashed at an angle of 110° and a speed of 210 knots in a parking lot. The aircraft was totally destroyed by impact forces and a post-crash fire. All 22 occupants were killed.
Weather Conditions
At the time of the accident, weather conditions were marginal with icing conditions. Horizontal visibility was 5 kilometers, and the cloud base was at 700 feet.
Probable Cause
The official investigation determined that the probable cause was loss of control on final approach due to an excessive accumulation of ice on the horizontal stabilizers after the crew lowered the flaps from 32° to 40°. When control was lost, both right engines n°3 and 4 were not running at full power for undetermined reasons, which caused the deicing system to produce an insufficient temperature.