As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR INTERRUPT, DIVERTED & AN EMER NOT DECLARED. LANDING UNEVENTFUL & ACFT NOT OVERWEIGHT. DURING CRUISE THE STANDBY ATTITUDE INDICATOR FAILED & RED FLAG CAME INTO VIEW. R & R THE STANDBY HORIZON INDICATOR IAW AMM 34-28-01 & INVERTER IAW AMM 34-28-02. SYS CHECKED NORMAL.