As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE AIRCRAFT WAS GROUNDED. CREW REPORTED BOTH STABILIZER TRIM SYSTEMS INOP. THE FLIGHT DECLARED AN EMERGENCY AND RETURNED TO STL WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED STABILIZER TRIM MOTOR IAW AMM 27-41-71. STABILIZER TRIM TESTED IAW AMM 27-41-71.