As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMB OUT, ELEC TRIM DID NOT WORK AT ALL. AUTOPILOT WOULD NOT ENGAGE. MANUAL TRIM WORKED NORMALLY. AFTER SEVERAL MINUTES THE SPEED TRIM FAIL LIGHT ILLUMINATED. FLIGHT DECLARED AN EMER & RETURNED WITHOUT FURTHER INCIDENT. ACFT WAS REMOVED FROM SERVICE. R & R STABILIZER TRIM MOTOR IAW 27-41-71-601, OPERATIONALLY CHECKED GOOD.