What was found
DURING LT TURN ON CLIMB OUT, THE CAPTAIN'S RUDDER PEDALS JAMED WITH THE LT SIDE FORWARD AND THE RT SIDE AFT. WHILE PUSHING TRYING TO FREE THEM THEY BROKE LOOSE AND BOTH SIDES WENT ALL THE WAY DOWN. THE CAPTAIN WAS ABLE TO DETERMINE THAT THE PEDAL FORE/AFT ADJUSTMENT MECHANISM HAD BROKEN. THE F/O PEDALS REMAINED FULLY FUNCTIONAL. THE CREW RAN THE NON-STANDARD LANDING CHECKLIST AND LANDED UNEVENTFULLY. INSPECTION CONFIRMED THAT THE PEDAL ADJUSTMENT MECHANISM HAD STRUCTURALLY FAILED.