As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAST TWO TIMES LEFT ENGINE STARTED, LEFT GEN DID NOT COME ON LINE HAD TO COMPLETE QRH PROCEDURES GEN CAME ON LINE // BITE CHK BPCU, FAULTED LT SYS "UNDER FREQ-IDG/PMG WIRING." REMOVED & REPLACED #1 ENG IDG PER AMM 24-11-01-004. GROUND RUN OPS & LEAK CHECK GOOD. / LOG 671924 1 LT. IDG VERIFICATION // SUCCESSFUL. // NOTED