As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUME EVENT DURING TAKEOFF AND ON DESCENT. PERFORMED COM PROCEDURES AND LANDED UNPRESSURIZED. PACK 1 OFF ON 1ST EVENT SOLVED. COULD NOT DUPLICATE THE PROBLEM DURING TROUBLESHOOTING. PERFORMED DECONTAMINATION OF ENVIRONMENTAL CONTROL SYS IAW AMM 21-00-00-615-002. NO CABIN ODORS DETECTED AT THIS TIME.