As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISCREPANCY:HORIZONTAL STAB ACTUATOR P/N OFF 1159SCC200-43 S/N 97-909 FAILED DURING FLIGHT. RESOLUTION: GULFSTREAM INSTALLED REPAIRED UNIT P/N 1159SCC200-45 S/N 1271 OPERATIONAL CHECK SATISFACTORY. AIRCRAFT RETURNED TO SERVICE SEPTEMBER 8, 2018