What was found
FADEC RT FAIL, C/W QRH, IDLE RT ENG, DECLARED EMERGENCY, SINGLE ENG. ON DESCENT, FAIL TURNED TO RT FADEC 1 MSG (EMERGENCY DECLARED AS A PRECAUTION) (FULL AUTHORITY DIGITAL ENGINE CONTROL SYSTEM (FADEC) - "R FADEC FAULT 1" STATUS MESSAGE) REFER TO AFDL FOR COMPLETE SIGNOFF FOR RT FADEC REPLACEMENT. DEFER CLEARED & PLACARD REMOVED. ACFT OK FOR SERVICE.