As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE FLIGHT#4387 THE CREW REPORTED SMOKE IN CABIN DURING TEST FLIGHT FOR A CHRONIC SMOKE ODOR IN CABIN.A EMERGENCY WAS DECLARED AND THE AIRCRAFT LANDED WITHOUT FURTHER INCIDENT.MAINTENANCE REPLACED THE #1 ENGINE.OPERATIONAL CHECKS WERE GOOD.THE AIRCRAFT WAS RELEASED FOR SERVICE.