What was found
ON 12/15/2024, N317MP, CYO317, DEPARTED KSNA REPOSITIONING TO KELP AND APPROXIMATELY ONE HOUR INTO THE FLIGHT, THE RH SIDE OF THE INSTRUMENT PANEL STARTED TO GO OUT AND COME BACK. THIS HAPPENED A COUPLE TIMES THEN STAYED OUT. THE CREW DECIDED TO MAKE AN UNSCHEDULED LANDING INTO KPHX. THEY DID DECLARE AN EMERGENCY BUT LANDED SAFELY WITH NO OTHER ISSUES. ATI MAINTENANCE ARRIVED AT THE AIRCRAFT AND FIRST NOTICED THE OUTSIDE OF THE RH ENGINE COWLING HAD BLACK STREAKS USUALLY INDICATING A GENERATOR ISSUE/FAILURE. THE GENERATOR WAS REMOVED AND FOUND TO BE SEIZED WITH THE SHAFT SHEERED OFF. THE GEARBOX/ENGINE WAS INSPECTED WITH NO DISCREPANCIES NOTED. A FRESH OVERHAULED GENERATOR WAS INSTALLED, RH MAIN POWER CURRENT LIMITER WAS FOUND BLOWN AND WAS REPLACED. THE ENGINES WERE RUN INDIVIDUALLY AND THEN TOGETHER WITH MULTIPLE TESTS OF THE GENERATOR COMPLETED WITH LOADS APPLIED. ALL TESTS COMPLETED SATISFACTORILY. THE AIRCRAFT WAS FLOWN TO KELP WITH NO ISSUES.