Each of the 16 individuals on board the inflatable - 15 travelers and the pilot - were killed in Saturday's accident.
It's not clear what part of the inflatable hit the lines, representative Robert Sumwalt said. It's additionally vague whether the flame that broke out on the inflatable happened before or after the impact, Sumwalt said.
The examination will take a gander at three principle variables to decide the reason for the accident: the inflatable, its administrators and nature, Sumwalt said.
The FBI has discovered 14 individual electronic gadgets from those on board the inflatable, Sumwalt said. They incorporate mobile phones, one iPad, and three cameras.
The cameras, he said, are wrecked, yet he said he trusts NTSB lab experts can recoup the pictures.
"They have possessed the capacity to do inexplicable things" in the past to recoup data from decimated and harmed gadgets, Sumwalt said.
Nichols utilized an iPad to explore and a PDA to speak with the ground team.
Some of those on board posted Twitter pictures that agents will analyze also, Sumwalt said.