What was found
(CAN) THE FLIGHT CREW SNAGGED THE JOURNEY LOG WITH A DEFECT OF "AUTOFEATHER U/S". MX REPLACED THE HIGH PRESSURE AUTOFEATHER SWITCH. THE FLIGHT CREW REPORTED NO FURTHER PROBLEMS. 6 DAYS LATER A DIFFERENT FLIGHT CREW COMPLAINED OF AUTOFEATHER PROBLEMS ON FINAL APPROACH. MX CARRIED OUT RE-RIGGING AND THE FLIGHT CREW CARRIED OUT 2 MORE FLIGHTS AND THE NEXT DAY AGAIN REPORTED PROBLEMS WITH THE AUTOFEATHER SYS. AN INVESTIGATION INTO THE PROBLEM WITH THE AUTOFEATHER PROBLEM REVEALED A BROKEN THROTTLE CABLE SUPPORT BRACKET. THE CAUSE OF THE FAILURE IS UNKNOWN.