As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE AFT LAV WARNING ON CLIMB OUT. (SMELLED LIKE BURNED PAPER, MELTING ELECTRICAL. FIRE DEPT VERIFIED SMELL AFTER LANDING- LOCALIZED IN LAV AREA) COMPLETED POST COMPRESSOR WASH CHECKLIST IAW AMM 72-00-00. NO FURTHER DEFECTS NOTED. PERFORMED MX FLIGHT CHECK NO DEFECTS NOTED.