As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - CREW REPORTED RIGHT GENERATOR FAILED. STARTED AUXILIARY POWER UNIT PER QRH PROCEDURES. FLIGHT RETURNED ORD LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPAIRED BROKEN WIRE AT X1 TERMINAL OF CURRENT TRANSFORMER T1-13. SYSTEM GROUND CHECK NORMAL OPERATION.