As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELEC GEN 1 OFF AND ELEC DRIVE 1 ADVISORY MESSAGE ON TAKEOFF ROLL. BOEING AHM PROGRAM HAS DETECTED 24224 AND 24535 IDG-1 FAIL OVER FREQUENCY AND LOW OIL PRESSURE. FOLLOWED MEL PROCEDURE. REPLACED NR 1 IDG PER MM, LEAK CHECK AND OPERATIONAL CHECK IS GOOD.