As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAD/PHL - FLT 6227 - DURING CRUISE ON 7-29-95, RETURNED TO IAD DUE TO THE LT GENERATOR FAILING IN-FLIGHT. AIRCRAFT RETURNED TO IAD WITH NO FURTHER INCIDENTS. MAINTENANCE REPLACED THE GCU. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (X)