Pilots in crashes had failed multiple tests
In nearly every serious regional airline accident during the past 10 years, at least one of the pilots had failed tests of his or her skills multiple times, according to an analysis of federal accident records. In eight of the nine accidents during that time, which killed 137 people, pilots had a history of failing two or more "check rides," tests by federal or airline inspectors of pilots' ability to fly and respond to emergencies. In the lone case in which pilots didn't have multiple failures since becoming licensed, the co-pilot was fired after the non-fatal crash for falsifying his job application. Ref. Source 1