As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#479, JFK-MJB. 'FUME EVENT ON TAKE OFF BOTH PACKS ODOR ISOLATION DID NOT WORK AIR RETURN; FOUND SOURCE OF ODOR TO BE APU. LEVEL B DECONTAMINATION OF THE ECS CARRIED OUT IAW AMM 21-00-00. NO SMELL NOTED APU PLACED ON DEFERRAL REF MDDR 531486 REPLACED RECIRCULATION FILTERS IAW AMM 21-21-41. A/C OK FOR CONT SVC.'