As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TYS - CREW REPORTED LAV AND SMOKE BAGGAGE FIRE INDICATIONS IMMEDIATELY AFTER TAKEOFF. AIR RETURNED TO TYS. UPON INSPECTION MAINTENANCE FOUND SMOKE TO BE RESIDUAL COMPRESSOR WASH SOLUTION RAN AIRCRAFT AT HIGH POWER SETTINGS TO BURN OFF EXISTING SOLUTION AIRCRAFT SAFE FOR FURTHER FLIGHT. RELEASED IAW MEL 26-23-00 CATEGORY C PLACARD NR 264513. (M)