The wreckage will be transported to a secure hangar in atlanta for another look.
The investigation into last weekend's medical helicopter crash in Georgetown County has taken a new turn.
Investigators say they've found witnesses who may be able to provide some insight into why the crash happened.
NewsChannel 15 spoke with an NTSB official about the probe.
The NTSB says they will interview several people from Georgetown County who might provide some key information and investigators have also recovered an important piece of the puzzle, the aircraft's log book.
NTSB investigators have still not found anyone who actually saw the Carolina Lifecare chopper go down Friday night. But they will talk to three people who may have seen it in flight or could provide critical information about weather conditions that night.
Investigators will also take a close look at the aircraft's maintenance log book, which was recovered from the wreckage - damaged by fire, but still legible.
Peter Knudson, official spokesman for NTSB, said "It's possible maintenance items are written up from an earlier flight that had not yet been recorded in the permanent logs, so that's something we always check out in any aircraft accident."
Investigators have wrapped up their on-site probe. Now the wreckage will be transported to a secure hangar in atlanta for another look.
"We will be able to revisit that as we need to to further examine the wreckage or particular components of it that we may be particularly interested in," Knudson said.
The preliminary report on the crash is due by the end of next week. The final report may take up to a year.
The manager of the Conway crew says the three who died were part of a close-knit unit, who were well aware of the dangers and accepted the risks because they believed in their job. Kelvin Oakley, Clinical Mgr for Carolina Lifecare, said "We're not in it for ourselves. we're in to be able to offer that extension of a medical center or a trauma surgeon or a brain surgeon that we don't have locally to people that need it that are in critical condition."
Some officials have questioned why there was a two hour delay between the time a dispatcher lost contact with the chopper and local authorities were notified.
Knudson says the NTSB isn't spending much time on that, since it wouldn't have made any difference in the crew's survival.
