Flight of the First Commercially Certified Helicopter Bell Model 47 NC1H

The NC1H fell to the ground from a height Demming estimated at 30–50 feet (9–15 meters). Photos from the helicopter suggested that the hub failed and the associated parts were thrown outward, away from the axis of rotation. With nothing to support it in flight, the rest of the helicopter dropped to the ground.

As a result of the impact, both Demming and Hensley became unconscious. Demming soon regained consciousness and got out of the cockpit, while airport fire/rescue personnel looked after Hensley, who had fractured three vertebra. Initially, Hensley was not expected to survive his injuries, but fortunately he eventually recovered.

The NC1H was damaged beyond repair.