Accident Overview
During dark night conditions, a helicopter operating a medical transport flight departed from its hospital base en route to another hospital to pick up a patient. The pilot landed the helicopter 15 miles south of the destination hospital due to fog. The patient was transported via ambulance to the helicopter and transferred aboard.
Departure and Witness Observations
After the patient transfer, witnesses reported that the helicopter departed with its lights on, heading south at an altitude between 10 and 75 feet above ground level. Visibility was described as poor, about 1/4 mile, with a very low ceiling and extremely dense fog. One witness noted that the helicopter appeared to be trying to stay close to the ground and avoid entering the heavy fog.
Accident Site and Impact
Examination of the accident site revealed that the helicopter impacted in a near 45-degree nose-low attitude. The wreckage covered an area measuring 262 feet by 75 feet.
Weather Conditions
A weather study indicated that the accident site was in an area of low ceilings and fog, which was expanding to the south and west.
Pilot Experience
According to documents provided by the operator, the pilot had accumulated a total of 44 simulated instrument flight hours and 1 hour of actual instrument flight experience.
Mechanical Examination
Examination of the helicopter revealed no evidence of an in-flight control or system malfunction. Examination of the engines showed evidence of operation at the time of impact.
Probable Cause
The investigation did not state a probable cause.