What happened
As the aircraft approached Stockholm, adverse meteorological conditions developed. Specifically, visibility was reduced by fog, prompting the flight crew to initiate an emergency procedure. The team selected Fjäturen Lake, located approximately 15 kilometers north of the city center, as a designated off-airport landing site. During the approach onto the frozen surface of the lake, the three-engine aircraft lost control and struck the ice. The impact caused the fuselage to penetrate the ice layer, leading to the immediate submersion of the airframe.
Findings
The incident resulted in fatal consequences for everyone on board. Both members of the flight crew were killed in the crash. No specific technical findings or contributing mechanical factors are detailed in the available source material beyond the decision to land due to weather conditions.