Accident Details
Shortly after takeoff from Yellowknife Airport, a twin-engine aircraft encountered serious difficulties in gaining altitude. The aircraft subsequently struck a building and crashed. Both crew members, who were performing an on-demand cargo flight, were killed in the accident.
Investigation Findings
Investigators determined that the total weight of the aircraft exceeded its maximum takeoff weight (MTOW) by 1,400 pounds. Additionally, the aircraft had been parked on the ramp for six days prior to the accident. The crew failed to perform any deicing, defrosting, or contaminant removal before departure. No such procedures were carried out.
Probable Cause
The official probable cause states that in the conditions described, the aircraft failed to gain height due to a loss of lift, loss of aerodynamic performance, and a subsequent overload.