The details of the deal for Brandon Bostian are still unknown.
He faces eight counts of manslaughter, hundreds of counts of reckless threat and causing a catastrophe.
As a result of the disaster in Port Richmond on May 12, 2015, eight people died and another 200 were injured.
The NTSB found that Bostian had been distracted by radio chatter that trains were being thrown at the area.
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