As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STANDBY HORIZON GYRO FLAG APPEARED DURING CLIMB-OUT FROM HOU. PULLED AND RESET CIRCUIT BREAKER Z31 WITH THE SAME RESULTS. FLIGHT DIVERTED TO MEM AND LANDED WITHOUT INCIDENT. REPLACED STANDBY HORIZON AND POWER INVERTER. OPERATIONAL CHECK OK ON GROUND. AIRCRAFT RETURNED TO SERVICE.