Willoughby Hills, OH -  Federal investigators will spend several days in northeast Ohio, looking for the cause of this week's deadly plane crash in Willoughby Hills.  Pam Sullivan of the National Transportation Safety Board says pilot William Felten reported trouble immediately after taking off from the Cuyahoga County Airport. 

Felten was one of four Case Western Reserve University students who died in the crash, along with Lucas Marcelli, Abraham Pishevar and John Hill.