As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MALFUNCTION ON STBY DC BUS, BREAKER 6AZ WAS POPPED. WHEN RESET ALL MALFUNCTIONS DISAPPEARED EXCEPT LT ENG EEC WAS IN ALT MODE. A/T INOP ASSOC MALFUNCTION. MAINT IN PROGRESS. REPLACED C/B C872, RELAT K109 AND STANDBY POWER SYSTEM, OPS CHECK GOOD.