What was found
DFW - PASSENGER REPORTED SMOKE IN CABIN WHILE SITTING AT THE GATE WITH APU RUNNING AND ENGINES SHUT DOWN. MAINTENANCE GROUND RAN ENGINES AND REPORTED NO SMOKE OR FUMES. AIRCRAFT WAS RETURNED TO SERVICE. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DFW - PASSENGER REPORTED SMOKE IN CABIN WHILE SITTING AT THE GATE WITH APU RUNNING AND ENGINES SHUT DOWN. MAINTENANCE GROUND RAN ENGINES AND REPORTED NO SMOKE OR FUMES. AIRCRAFT WAS RETURNED TO SERVICE. (M)