We’re still collecting data for this aircraft. Routes appear once we’ve seen it fly enough times.
The Board found that the empennage disintegrated during the dive, but whether the failure of the empennage and its controls was an effect or a cause of the dive could not be known. The Board determines that the probable cause of this accident was "a sudden loss of control, for reasons unknown, resulting in a dive to the ground."
Douglas DC-4 · 53 fatalities