Challenger 604 Panel. PANEL DESIGN BY. Brendan Dillemuth Contact me with any issues at x9pbathotmail. com INSTALLATION.. . 1. ) Backup your original panel. ChallengerFS9 folder located in your CL604AM9 aircraft folder. 2. ) Copy the new panel. ChallengerFS9 folder to your CL604AM9 aircraft folder. 3. ) Copy the CONTENTS of the Guages folder to your MAIN FS9 GUAGES folder. DONE. ) IF YOU WOULD LIKE REPAINTS FOR THIS AIRCRAFT, DOWNLOAD CL604P1 BY Robert Christian from Avsim. com