As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT, A STRONG ODOR WAS PRESENT PRIMARILY IN THE COCKPIT. THE ODOR IS MOST NOTICEABLE WHEN THE AIR SYSTEM IS CALLING FOR AN INCREASE IN TEMPERATURE. COMPLIED WITH FIM 21-20-00, WITH NO DEFECTS NOTED AT THIS TIME. OK TO RELEASE AT THIS TIME.