NTSB to release documents in Amtrak crash investigation

NTSB releases documents from Philadelphia Amtrak crash investigation

A federal accident investigations board is set to release documents that could shed light on the cause of a fatal Amtrak train derailment in Philadelphia last year.nvestigators try to determine whether Amtrak train 188 was hit by something just before it crashed, for the first time we're hearing the frantic call made by transit police about another incident on the same night.