As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI PILOT WAS ATTEMPTING TO CENTER THE NOSE WHEEL FOR RUN-UP PRIOR TO TAKE-OFF. WHEN PILOT PUSHED LEFT RUDDER PEDAL A LOUD POP WAS HEARD FOLLOWED BY THE LEFT PEDAL GOING LIMP. CO-PILOT STILL HAD FULL CONTROL ON HIS SIDE. CO-PILOT THEN TAXIED BACK TO RAMP AND SHUT DOWN AIRCRAFT. DURING INVESTIGATION IT WAS FOUND THAT THE LEFT PILOT SIDE RUDDER CONTROL TUBE HAD SNAPPED OFF AT THE WELD AND WAS NO LONGER CONNECTED.