What happened
A scheduled flight operated by Linjeflyg was traveling from Kristianstad to Stockholm-Bromma, with planned stops in Jönköping and Växjö. The aircraft, carrying 19 passengers and a crew of three, was performing its final approach to Bromma Airport when the flight encountered difficult weather conditions characterized by icing and marginal visibility.
While flying at an altitude of 1,150 feet with a speed of 137 knots, the crew adjusted the flaps to a 40° setting. Following this configuration change, the aircraft suffered a loss of control and entered a steep nose-down descent. The aircraft type impacted a parking lot within the Kälvesta residential district at approximately 210 knots, roughly 4.5 km before reaching the threshold of runway 12. The impact and subsequent fire resulted in the total destruction of the plane and 22 fatalities.
Findings
Investigations into the accident identified that the primary factor was the accumulation of ice on the horizontal stabilizers. This buildup occurred specifically after the crew transitioned the flaps from 32° to 40°. The investigation also noted that engines number 3 and 4 were not operating at full power during the loss of control, which prevented the deicing system from maintaining an adequate temperature to mitigate ice formation.