As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#1 GENERATOR FAILED TO COME ONLINE. DRIVE LIGHT WENT OUT. GROUNDED - YES. OPERATED NO.1 ENG AND CONFIRMED FAULT. ACCOMPLISHED NO.1 GCU BITE TEST REF B737-800 FIM 24-21 TASK 801 AND FOUND "IDG FAULT." CLEARED GCU FAULT AND GOT A "GCU PASS" MESSAGE. REMOVED AND REPLACED #1 IDG IN REF TO B737-800 AMM 24-11-11. OPS AND LEAK CK GOOD.