What was found
BURNED RUBBER SMELL IN COCKPIT. INSPECTED LEFT AND RIGHT COCKPIT PANELS, OPERATED APU AND AIR CONDITIONING PACKS WITH NO ODORS NOTED. ODOR DUPLICATED WHEN RECONNECTED GROUND HEATER. RETURNED AIRCRAFT TO SERVICE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
BURNED RUBBER SMELL IN COCKPIT. INSPECTED LEFT AND RIGHT COCKPIT PANELS, OPERATED APU AND AIR CONDITIONING PACKS WITH NO ODORS NOTED. ODOR DUPLICATED WHEN RECONNECTED GROUND HEATER. RETURNED AIRCRAFT TO SERVICE.