Linjeflyg Flight 618

Linjeflyg Flight 618 was a crash of a Vickers 838 Viscount during approach to Stockholm Bromma Airport at 09:05 on 15 January 1977. All twenty-two people on board the aircraft perished when it hit ground at Kälvesta in Stockholm, Sweden. The domestic service from Malmö via Kristianstad, Växjö and Jönköping was operated by Skyline on behalf of Linjeflyg as part of the latter's domestic scheduled services. The accident was caused by atmospheric icing on the horizontal stabilizer. Low power on two of the engines had caused reduced function of the ice protection system, causing a buildup of ice. The icing caused the loss of pitch control and the aircraft entered a steep dive. Among the deceased was table tennis player Hans Alsér.

Flight

Because of delays of the delivery of their new Fokker F28 Fellowship aircraft, Linjeflyg started in 1975 to wet lease flights from Skyline. The airline operated three Vickers Viscount aircraft in this period, using their own crew and aircraft, but with Linjeflyg's flight codes and chartered for an hourly fee. During the late 1970s Linjeflyg accounted for the vast majority of Skyline's revenue.

Flight 618 was a domestic scheduled passenger flight on 15 January 1977. It was conducted using a Vickers 838 Viscount with registration SE-FOZ. The aircraft was bought used by Skyline in 1976 to replace an existing, smaller Viscount 784. With a first flight in 1961, it had flown 12,208 hours at the time of the accident. Flight 618 was to fly from Malmö Sturup Airport to Stockholm Bromma Airport, with intermediate stops at Kristianstad Airport, Växjö Småland Airport and Jönköping Airport. The flight commenced as nominal until descent to Bromma. At this time there were nineteen passengers and a crew of three on board, including the well-known table tennis player Hans Alsér.

Accident

During flight the number two and three engines were run at reduced power for a prolonged period, causing the ice protection system temperature to sink below minimum thresholds. The horizontal stabilizer was therefore subject to atmospheric icing. The pilots noticed this at an altitude of 350 m when they experienced loss of pitch control. The aircraft entered a steep dive and crashed at a parking lot in Kälvesta, a neighborhood of Stockholm. The impact took place at 09:05 local time, 4.5 km from the threshold of the runway at Bromma. All on board were killed in the crash.