As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EICAS MSG L GEN DRIVE DISPLAYED.GEN DRIVE LGT ILLUM. GEN DRIVE DISCONNECTED. CREW COMMENTS: L GEN DRIVE LIGHT ON. APU OK. FOUND L ENG IDG WITH MULTIPLE HOLES, DIFF PRESS INDICATOR POPPED. DRAINED IDG OIL, SMELLED NO EVIDENCE OF FUEL. MOTORED ENGINE TO ENSURE IDG DISCONNECTED. INSPECTED AREA AROUND IDG AND COWLING, NO OTHER DEFECTS FOUND. REPLACED NR 1 IDG LEAK & OPS CHKD NORMAL.