Transcript for Deadly Medevac Crash Kills All on Board
Deadly crash in California a medevac an ambulance in the air. Going down and foggy weather as they rushed a patient to a hospital all four on board killed and there is late word tonight that the crew that was supposed to be on board that aircraft. With a last minute change of plans there was a replacement crew on board. ABC's David currently covers aviation. In these Rolling Hills those trying to save lives lost theirs this medevac helicopter going down killing the pilot to medical personnel and a patient. The chopper crashing just north of Bakersfield its destination it was dark and foggy difficult conditions even for those looking for the missing chopper. It looked like negative effect throughout their capital at a little here pretty. The medevac operator by a private company. Those killed offered to take the place of another crew which attended the company's Christmas party last night. There's inherent risk in and campus and specially. Airing its. We have seen those risks laster knew Mexico a medevac taking off from a hospital crashing on the roof. So often these crashes are deadly in the past decade 78 lives lost in medevac accidents the National Transportation Safety Board is concerned. And among other things wants those choppers to have night vision. The very people that are going out to save lives are unfortunately crashing. And claiming the lives the NTSB is on the scene of this crash hoping what it learns prevents another tragic loss. David currently ABC news Washington.
This transcript has been automatically generated and may not be 100% accurate.