The disappearance of Malaysia Airlines Flight MH370 in 2014 is one of the biggest mysteries in the history of aviation.
"The signals we have analyzed indicate that the there was a 25-minute shutdown that has gone unexplained."
A new National Geographic documentary simulated what might have happened on Malaysian Airlines flight MH370, which vanished more than four years ago en route to Beijing from Kuala Lumpur.
"To me, it is a helpless day as doors are shut," said one family member.
"This was planned, this was deliberate, and it was done over an extended period of time," Martin Dolan said.
Two wrecks discovered in 2015 have been identified as coal-trading ships, rather than the plane that went missing in 2014 with 239 passengers.
Ocean Infinity will resume the search on a "no cure, no fee" basis, meaning the team will only receive payment if it is able to locate the plane.
The search lasted three and a half years and was the most expensive in history.
The families of the MH370 victims have long pushed for the search for the missing plane to be extended, but whether Friday's news will change anything for them remains unclear.
The information gleaned should provide unprecedented insight into the habitats of valuable species.
Flight MH370 went missing in March 2014 with 239 people on board.
If his theory is correct, investigators may be looking in the wrong search area.
Since the Malaysian Airlines flight went missing two years ago only one confirmed piece has been found.
The two-year search has now discovered two shipwrecks, but still no plane.
After initial confusion, the French confirmed the flaperon is from the missing plane.
Officials couldn't immediately confirm whether the fragments belonged to Malaysia Airlines Flight 370.
The debris washed up on the Indian Ocean island of Reunion and could help end 16 months of lingering uncertainty.