As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT RETURNED TO IAD DUE TO THE FLIGHT CREW REPORTING THE LOSS OF THE LEFT ELECTRICAL SYSTEM ON FINAL ALONG WITH A HIGH OIL TEMPERATURE INDICATION FOR THE #1 ENGINE IDG. THE FLIGHT CREW DISCONNECTED THE #1 ENGINE IDG AND RETURNED TO IAD WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE #1 ENGINE IDG AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 24-51-51.