Federal investigators held hearings on Capitol Hill last month on the cause of the crash but have not concluded their inquiry . NTSB to examine training at regional airlines to make sure it meets federal standards . USA Today investigation into fatal crash in Washington revealed pilot exam failures . USA Today inquiry found pilot test failures in nine of eight regional airline crashes .
NTSB to examine training at regional airlines to make sure it meets federal standards . USA Today investigation into fatal crash in Washington revealed pilot exam failures . USA Today inquiry found pilot test failures in nine of eight regional airline crashes .