The crash happened September 8, 2017 in Perquimans County near Belvidere. The helicopter belonged to Duke Health. It was transporting two staff nurses and a patient to Duke Medical Center from Sentara Albemarle Medical Center.
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The nurses, patient and helicopter pilot all died in the crash.
The national Transportation Safety Board determined that the accident happened after a failure in the rear bearing of the helicopter's number 2 engine.
That rear bearing failure caused "unexpected and confusing cockpit indications," according to the NTSB report. The pilot then shutdown the number 1 engine, which caused engine number 2 to degrade quickly and ultimately lose power entirely.
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READ THE FULL REPORT BELOW
The NTSB said that the complete loss of engine power happened at a time and place that made it impossible for the pilot to safely make an emergency landing.