Captain Marvin Renslow, 47, of Lutz, Florida, was the pilot in command with 3379 flying hrs total with 111 hrs on type , Data extracted from the FDR revealed the aircraft went through severe pitch and roll oscillations shortly after the extension of flaps and landing gear, which was followed by the activation of the "stick shaker" stall-warning system , the Bombardier was less than 2 years old and inadvertently went out of control on approach after landing flaps deployed and the Captain couldn’t correct it ? .

https://en.m.wikipedia.org/wiki/Colgan_Air_Flight_3407#:~:text=Those%20findings%20were%20immediately%20followed,the%20airplane%20did%20not%20recover.