The National Transportation Safety Board is investigating a deadly helicopter crash in the Gulf of Mexico.
The Coast Guard received a call on Wednesday from Westwind Helicopter that a Bell 407 with three people on board had gone down about 46 miles south of Morgan City.
A Coast Guard air crew rescued two crew members from a life raft and flew them to a New Orleans hospital in critical condition.
The third crew member was found dead in the submerged helicopter.
The names of the crew members haven't been released.
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