As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3266 CREW REPORTED A STRANGE ODOR IN COCKPIT AFTER THE NR 1 ENGINE START ON BOTTLE AFTER SELECTING LEFT PACK. THE AIRCRAFT WAS REMOVED FROM SERVICE. VERIFIED START BOTTLE AS SOURCE OF ODOR AFTER ENGINE START IAW AMM CH72-00-00. NO DEFECTS NOTED. THE AIRCRAFT WAS RETURNED TO SERVICE.