What was found
R FADEC FAIL AMBER CAS: AT FL410, RECEIVED AN AMBER R FADEC FAIL CAS. RIGHT ENGINE AUTOMATICALLY REDUCED TO IDLE. RAN APPRIATE QRH PROCEDURE FOR DISPLAYED CAS. B3-302584 CORRECTIVE ACTION: REMOVED W5 HARNESS CAREFULLY AND ROUTED OUT OF THE ENGINE. SWAPPED ASSOCIATED CLAMPS AND HARDWARE TO NEW CUSTOMER SUPPLIED W5 HARNESS. INSTALLED NEW HARNESS WITH REFERENCE TO HONEYWELL LMM 76-10-01, RESECURED HARNESS CLIPS AND HARDWARE, CLOSED ASSOCIATED BYPASS DUCTS AND PANELS. PERFORMED W5 HARNESS REPLACEMENT POST MAINTENACE CHECKS WITH NO DISCREPANCIES FOUND. PN ON 3034427-3 SN ON 23-162599-11322 PN OFF 3034427-3 SN OFF 24-162599-12117