As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF THEY GOT A LAVATORY SMOKE WARNING. NO SMOKE SEEN, NOTICED AN ELECTRICAL ODOR. RETURNED TO DEPARTURE AND LANDED WITHOUT INCIDENT. ACFT REMOVED FROM SERVICE. FOUND OIL POOLING BEHIND THE IVG'S AT THE 6 O`CLOCK POSITION IAW ETN-EM-79-014 ON THE RT ENGINE. R & R THE RT ENGINE IAW AE W/C 71-000-00. THE OPS CHECK WAS GOOD, NO LEAKS NOTED, NO SMOKE NOTED/DETECTED. THE ACFT WAS RETURNED TO SERVICE.