Besides his inexperience with the stick-pusher, Renslow had failed at least two flight simulator "check rides" administered by FAA during his employment at Colgan and several other check rides earlier in his career, sources said.
Colgan may not have known about the previous check ride failures because of a loophole in FAA requirements about what pilots must tell prospective employers, sources said.
Another issue to be probed at the hearing is whether the flight's first officer, Rebecca Shaw, was too fatigued to fly but failed to tell Colgan that because the work culture at the airline didn't encourage such disclosures, sources said.
Shaw had been a passenger on a red eye flight the previous night from Seattle, where she lived with her parents, in order to be at Newark Liberty International Airport for the flight to Buffalo. She also had a cold and was suffering from congestion, sources said.


