As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE BRAKE PEDAL BROKE OFF ON ACTIVE RWY DURING BACKTRACK FOR DEPARTURE. THE PEDAL DID SHEAR OFF WHERE THE PEDAL WAS WELDED/ATTACHED TO THE TUBE ON THE PEDAL ASSY. THE TUBE IS ATTACHED TO THE RUDDER ASSY AND ALLOWS THE BRAKE PEDAL TO PIVOT FOR BRAKE CONTROL.