As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT RETURNED TO MCO, NR 1 ENGINE SHUTDOWN DUE TO LOSS OF THRUST. FOUND EXTERNAL PS4 LINE BETWEEN THE FCU AND C/C/O FAN DUCT DISCONNECTED AT THE PS4 PROBE. THERE WAS NO EVIDENCE OF SAFETY WIRE IN THE PROBE TO B-NUT CONNECTION. RECONNECTED PS4 LINE TO PROBE AND SAFETIED.