As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SUSPECTED ENVIROMENTAL SMOKE IN CABIN ACCOMPANIED BY STRONG ODOR AND GRAY SMOKE. COULD NOT DUPLICATE ON GROUND RUNS APPROVED FOR FERRY FLT. INSPECTED ENGINES AND ACM/DUCTING NO DEFECTS NOTED. ACOMMPLISHED IAW MM 71-00-00. ALL SYS OPERATED NORMALLY, OK FOR CONTINUED SERVICE.