What was found
ORD CREW REPORTED RUNAWAY STAB TRIM FULL NOSE DOWN. EMERGENCY DECLARED FLIGHT LANDED ORD WITHOUT INCIDENT. ACFT REMOVED FROM SERVICE. REPLACED PRIMARY STAB TRIM MOTOR. SYS GND CHECKED NORMAL, OPERATION CLOSED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ORD CREW REPORTED RUNAWAY STAB TRIM FULL NOSE DOWN. EMERGENCY DECLARED FLIGHT LANDED ORD WITHOUT INCIDENT. ACFT REMOVED FROM SERVICE. REPLACED PRIMARY STAB TRIM MOTOR. SYS GND CHECKED NORMAL, OPERATION CLOSED.