As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT GENERATOR SYSTEM IDG HAS DISCONNECTED OR A PROTECTIVE TRIP OF THE GENERATOR CONTROL BREAKER HAS OCCURRED OR A PROTECTIVE TRIP OF THE BTB HAS OCCURRED. STATUS MSG01-LATCHED CRUISE MODE DEPENDENT; INTEGRATED DRIVE GENERATOR (LT) FREQUENCY IS LOW. DB-GENERATOR CONTROL UNIT (L) MSG-2431631 LATCHD ER MODE. NR1 ENG GENERATOR IAW MM, OPS NORMAL.