As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE ACFT WAS ON APPROACH AFTER A ROUTINE PIPELINE PATROL WHEN THE PILOT PULLED THE CARBURETOR HEAT CONTROL TOWARDS THE "ON" POSITION. THE PILOT REALIZED THAT THE CONTROL FELT LOOSE AS HE CONTINUED TO PULL IT OUT OF THE PANEL. THE INNER CONTROL CABLE HAD SEPARATED ABOUT 6 INCHES FROM THE CONTROL KNOB. THE PILOT CONTINUED THE DESCENT AND LANDED THE ACFT WITHOUT INCIDENT. THE CONTROL WAS REPLACED AND THE ACFT RETURNED TO SERVICE.)