As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PRE FLIGHT SMELL OF SMOKE IN COCKPIT WITH LT PACK ON. UPON BOARDING ACFT FOUND APU RUNNING WITH BOTH LT AND RT PACKS ON AND OPERATING NORMALLY. INSPECTED ALL WINDOW HEAT CONNECTIONS, TERMINALS, COCKPIT CB`S AND LIGHTS. ALL APPEAR NORMAL. NO ODOR OR SMOKE NOTED AT THIS TIME. ACFT OK FOR SERVICE.