As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 4023 - AT APPROX 800-1000 FT F/O MAIN AND STANDBY PITCH TRIM BECAME INOPERATIVE CAPTAIN MAIN AND STANDBY PITCH. ALSO, INOPERATIVE CHECKLIST FOLLOWED AND CREW DECLARED EMERGENCY AND RETURNED TO ORD WITHOUT INCIDENT NO ASSOCIATED EICAS MESSAGES AND MOC WAS NOTIFIED OF RETURN TO FIELD BY DISPATCH. (M)