Narrative:The DC-4 departed London at 21:48 GMT for a flight to Toronto with refueling stops at Keflavik and Goose Bay. The aircraft departed Keflavik at 05:12 GMT following a 66-minute stop. At 13:20 GMT the crew radioed that they wanted to overfly Goose Bay and proceed to Montreal. Last radio contact was at 18:10 when Quebec Radio Range Station relayed a message to the aircraft requesting it to contact Montreal Range approaching Rougemont for clearance. The aircraft was flying at about 6000 feet when it entered an active cumulonimbus cloud, including heavy rain and strong gusty winds. Somehow control was lost and the aircraft struck the ground in an almost vertical (70deg nose down, slightly left wing down) attitude at a speed over 200kts.
PROBABLE CAUSE: "Severe turbulence encountered whilst flying in a cumulonimbus cloud, resulting in a chain of events quickly leading up to a complete loss of control and causing the aircraft to dive to the ground in a near vertical nose-down attitude."
» ICAO Accident Digest, Circular 59-AN/54 (18-23)
Follow-up / safety actions
As the pilots were on duty for nearly 20 hours, this affected their performance in an emergency situation. A Canadian standard was adopted for on-duty time limitations.
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not
display the exact flight path.
Distance from Reykjavík-Keflavík International Airport to Goose Bay Airport, NF as the crow flies is 2419 km (1512 miles).