As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW ADVISED THEY ARE RETURNING FROM TAXI TO FBO DUE TO SMOKE IN THE CABIN. NO VISIBLE FLAMES. PAX CAME UP DURING TAXI AND BROUGHT IT TO OUR ATTENTION. THERE WAS A LOT OF HEAT AND THICK SMOKE FROM OVERHEAD VENTS AS WELL AS FLOOR AND SIDE WALL. NO EMERGENCY SERVICES REQUESTED. OPEN