CNN Erin Burnett OutFront March 27, 2014 03:42:00
There was no may day call. the ntsb ruled the copilot intentionally crashed the plane, though egyptian authorities still say it was a mechanical failure. >> certainly pilots are part of the potential for the problem. so they have to be looked at. but basically it's not a guilty until proven innocent really. because there's only a few sources that could cause this type of problem, someone outside the cockpit certainly the people inside the cockpit. >> reporter: a suicidal pilot was also to blame for this, december 1997, the crash of silkair flight 185. it was heading from jakarta to singapore w...