As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI OUT, RT ENGINE GEN DRIVE LIGHT ILLUMINATED AND RT GEN OFF LIGHT ILLUMINATED, SHUT DOWN ENGINE. RESTART ENG AND RIGHT GEN DRIVE LIGHT ILLUMINATED, GEN NOT POWERING BUS. DISCONNECTED RIGHT IDG. FOUND DELTA P POPPED. NO CONTAMINATION TO EXTERNAL OIL COOLING CIRCUIT. REPLACED IDG.