As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW NOTED ON CLIMB-OUT SMOKE IN CABIN. CREW GOT THE LAV SMOKE DETECTOR, FOLLOWED MANUAL AND DECLARED EMERGENCY AND RETURNED TO SDF FOR MTX. LANDED SAFELY WITH NO OTHER PROBLEMS. REMOVED AND REPLACED RT ENGINE. OPERATION CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.