As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED A LOSS OF IDG 1 AFTER TAKE-OFF. FLIGHT RETURNED TO DEPARTURE, EMERGENCY DECLARED. IDG 2 OIL CAUTION MESSAGE IN FLIGHT. QRH 5.15 COMPLIED WITH. DISCOVERED A CHAFED WIRE HARNESS APPROX. 30 INCHES FROM IDG 2, J2 ON W8 HARNESS CONTACTING FUEL/OIL HEAT EXCHANGER. REPLACED THE WIRE HARNESS IAW AMM 71-50-12. RESET THE NR 2 IDG AMM 24-21-01. ALL OPS CHECKED GOOD. ACFT OK FOR SERVICE.