As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 100 DISCREPANCY. THE COPILOT ELEC PITCH TRIM WORKS NOSE DOWN ONLY. PILOT MADE THE DECISION TO RETURN SINCE IT INVOLVED A PRIMARY FLIGHT CONTROL SYS & IT WAS AN EMPTY REPO TAIL SWAP. NO EMER WAS DECLARED. ACFT LANDED WITHOUT INCIDENT. ELEC TRIM ISSUE WAS DEFERRED. ACFT RETURNED TO SERVICE.