As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED ODOR OF SMOKE IN COCKPIT & PASSENGER COMPARTMENT AND LT PACK, PACK HIGH TEMP CAS MSG ON GROUND. AIRCRAFT RETURNED TO GATE IN XNA. MAINTENANCE INSPECTED APU & PACKS NO VISUAL DEFECTS OR LEAKS NOTED PER THE AIRCRAFT MAINTENANCE MANUAL. MAINTENANCE DEFERRED THE LT PACK SYSTEM AND AIRCRAFT RELEASED FOR SERVICE.