What was found
ENROUTE KHVN TO KRDU AT FL260 AN EICAS “R GEN TIE OPEN” ILLUMINATED. FOLLOWED THE CHECKLIST AND CLEARED EICAS. AFTER ABOUT 4 MINUTES “R GEN TIE OPEN” AGAIN ILLUMINATED FOLLOWED BY “R GEN” ANNUNCIATOR. THE ‘R GEN” EICAS L/R “FIRE” ILLUMINATED IN THE TORQUE GAUGES FOR ONLY A FEW MOMENTS THEN EXTINGUISHED, THERE WAS NO SECONDARY INDICATIONS OF FIRE. EMERGENCY WAS DECLARED AND DIVERTED TO KACY. LANDING WAS UNEVENTFUL. MAINTENANCE ISOLATED THE DISCREPANCY TO A RIGHT ENGINE STARTER GENERATOR ARMATURE FAILURE. SG WAS REPLACED. PERFORMED PWC ENGINE REQUIREMENTS FOR SG FAILURE. AIRCRAFT WAS RETURNED TO SERVICE.