As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 3789 - DFW - DURING CLIMB, CAPTAINS PITCH TRIM FAILED WITH NO INDICATION ON EICAS. FIRST OFFICER AND STANDBY PITCH TRIM WORKED NORMAL. AN EMERGENCY WAS DECLARED AND AIRCRAFT WAS LANDED SAFELY. MAINTENANCE COULD NOT DUPLICATE DISCREPANCY. OPERATIONAL CHECK WAS COMPLIED WITH IAW EMB MM WITH NO DEFECTS NOTED. AIRCRAFT WAS RETURNED TO SERVICE. (M)