As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN ROUTE TO SUX STANDBY HORIZON FLAGGED. PILOT RESET C/B. C/B POPPED AGAIN. AIRCRAFT CONTINUED ON TO SUX WHERE A/C WAS GROUNDED UNTIL REPAIRS WERE MADE. MAINTENANCE REPLACED STANDBY ATTITUDE INDICATOR P/N H341ADM2, S/N ON 5106, S/N OFF 6254. STANDBY ATT INDICATOR OPS CHECKS GOOD IAW SF 340 MM CHAP 34.