As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHORTLY AFTER TAKEOFF OF FLIGHT, THE CREW REPORTED A LT ALTERNATOR AND LT AC VOLT FAIL CAS MESSAGES. THE CREW PERFORMED AN AIR-TURN-BACK. MX REPLACED LT ALTERNATOR (AC GENERATOR) AND WITH NO FURTHER DISCREPANCIES RETURNED THE AC TO SERVICE. ON THE SAME FLIGHT, SECOND ATTEMPT THE SAME PROBLEM RETURNED THE CREW PERFORMED A SECOND AIR-TURN-BACK. MX REPLACED THE LT ALTERNATOR CONTROL BOX AND WITH NO FURTHER DISCREPANCIES RETURNED THE AC TO SERVICE. (K)