As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 4874 - DURING CLIMB-OUT, CREW NOTED PITCH TRIM 2 FAIL, THEN SYSTEM 1 FAILED AND BACK UP. CREW RETURNED TO BOS. JUST AFTER LANDING PITCH TRIM SYSTEM OPERATED NORMAL. MAINTENANCE PERFORMED OPERATIONAL CHECK IAW EMB MM AND FOUND NO DEFECTS. AIRCRAFT WAS RETURNED TO SERVICE. (M)