As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4268 ON APPROACH THE CREW REPORTED A STRONG ODOR COMING FROM PACK 1. THE AIRCRAFT LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. PERFORMED EMB145 FIM 21-20-00 GROUND RAN A/C IAW RRMM 72-00-00 COULD NOT DUPLICATE. THE OPERATIONAL TEST WAS GOOD. C/W ETN EM-72-034-R4. NO ODOR NOTED. THE AIRCRAFT WAS RETURNED TO SERVICE.