What was found
CREW REPORTED DURING COCKPIT SETUP PRIOR TO DEPARTURE, A "SECONDARY TRIM FAIL" AMBER CAS MESSAGE ILLUMINATED. THIS SYSTEM IS REQUIRED FOR DISPATCH, AND THE AIRCRAFT CANNOT BE RELIEVED USING THE MEL OR MMEL. SUBSEQUENT TESTING OF THIS SYSTEM WAS PERFORMED AND THE PRIMARY AND SECONDARY TRIM FAIL MESSAGES ARE BEING RECEIVED INDICATING A FAILURE IN BOTH MODES. TROUBLESHOOTING BEGAN ON THIS SYSTEM INCLUDING THE REPLACEMENT OF BOTH PRIMARY AND SECONDARY PCB CARDS, REPLACEMENT OF THE ELECTRONIC CONTROL MODULE PCB CARDS, ECM FILTER, REPLACEMENT OF THE SECONDARY TRIM SWITCH AND INSPECTION OF ALL WIRING. TEXTRON REQUESTS THAT THE AIRCRAFT BE FLOWN VIA A FAA SPECIAL FLIGHT PERMIT TO WICHITA FOR FURTHER TESTING.