What was found
VIA SATFONE, CAPT ADVISED HE LOST THE RT GENERATOR. RT GENERATOR WENT OFF LINE WITH NO EICAS MESSAGE OR COCKPIT INDICATION EXCEPT RT GEN "OFF" LIGHT. ATTEMPT TO RESET WAS UNSUCCESSFUL. SUPPLEMENTAL DATA UPDATE THERE WAS AN ASSOCIATED MESSAGE 24-12092 POWER BUS (RT MAIN AC BUSS) IN P200 IS NOT POWERED] SHOWN INACTIVE/INTERMITTENT. THE RIGHT IDG WAS REPLACED AND OPERATIONAL CHECKED NORMAL. THE ENROUTE VERIFICATION FLIGHT WAS ALSO ACCOMPLISHED. CAUSE OF IDG FAILURE TO BE CONFIRMED UPON EXAMINATION OF IDG..