What was found
DURING RETURN FLIGHT, THE GENERATOR MASTER CAUTION LIGHT ILLUMINATED. THE AIRCRAFT CONTINUED TO BASE. UPON INSPECTION IT WAS FOUND THAT THE STARTER GENERATOR FORWARD BEARINGS HAD FAILED. THE BEARINGS ON THIS STARTER/GEN ARE ADDRESSED UNDER SB. THIS SB HAD BEEN COMPLECTED IN CONJUNCTION WITH A FULL OVERHAUL, THIS UNIT HAD A TSO OF 254.9 HOURS. THE ALTERNATE PN WAS INSTALLED, AND IS AWAITING MAINTENANCE OPERATIONAL CHECK BEFORE A RETURN TO SERVICE IS ISSUED.