As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R GEN FAILURE. RTFL. INITIALLY GEN STAYED ON LINE BUT WENT OFF LINE SHORTLY THEREAFTER. IDG WAS THEN DISCONNECTED BY CREW. BPCU HAS MULTIPLE MSGS INCLUDING IDG PMG WIRING, IDG UNDER FREQUENCY, SVC IDG AND IDG HIGH RISE TEMP. REPLACED IDG AND ACCOMPLISHED TEST. REPLACED GCU AND TESTS NORMAL.