As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATB DUE TO LOSS OF RT GENERATOR. APU WAS ON MEL. CREW FOLLOWED QRH PROCEDURES, NO EMERGENCY WAS NOT DECLARED. CONTACTED DISPATCH AND MC AND INITIATED ATB. BPCU FAULT IDG LOW OIL PRES/IDG HIGH RISE TEMP. REPLACED RIGHT IDG PER AMM. OPS CHECKS NORMAL. AIRCRAFT RETURNED TO SERVICE.