On November 1, 1969, a Convair CV-440 Metropolitan (registration SE-BSU) operated by Linjeflyg was involved in an aviation accident near Stockholm-Arlanda, Sweden during takeoff. No fatalities were reported. Investigators recorded the probable cause as: The accident was the consequence of the conjunction of the following factors: - Wind shear effect, - Roughness on wing surfaces (ice) could have affected climb performances, - The aircraft slipped to the left when power restored on left engine. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 1 related events involving the same aircraft type or operator are linked below.
During a local training mission, an aircraft crashed after a simulated engine failure. The left wing struck the ground following a banking maneuver. All four crew members were uninjured, but the aircraft was damaged beyond repair.
Accident Details
A training flight at Stockholm-Arlanda Airport ended in a crash after the crew simulated an engine failure. According to the investigation, the instructor reduced power on the left engine to simulate a failure during the takeoff roll. After rotation and during the initial climb, the crew elected to restore power to the left engine. At that point, the airplane banked left, causing the left wing to strike the ground. The aircraft went out of control, crashed to the left of the runway, and came to rest.
Occupant Status and Damage
All four crew members aboard were uninjured. The aircraft sustained damage beyond repair.
Probable Cause
The official investigation determined that the accident was the consequence of the conjunction of the following factors: wind shear effect; roughness on wing surfaces (ice) could have affected climb performances; the aircraft slipped to the left when power was restored on the left engine, with the slipstream temporarily causing a yaw to the left and increasing the slip; and the banking attitude towards the 'failed' engine side caused the Vmc to increase over the calculated V2.