As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE - FLT 3223 - DEPARTING, HAD THE LT COWL OUTBOARD SIDE COME UNLATCHED. AIRCRAFT RETURNED TO CLE WHERE GPX MAINTENANCE INSPECTED THE COWL AND LATCH MECHANISM WITH NO DISCREPANCIES NOTED. COWL WAS SECURED AND AIRCRAFT WAS RETURNED TO SERVICE.