As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MULTIPLE FUME EVENTS DURING FINAL DESCENT (STRONG ACRID ELECTRICAL SMELL). SEEMED TO BE ASSOCIATED WITH PACK 1. STRONG IN COCKPIT, FRONT AND REAR CABIN-PERFORMED CABIN TEMP CONTROL IAW AMM 21-63-00. OPERATED AT FULL HOT AND FULL COLD FOR 30 MINS. EACH PACK. NO DEFECTS FOUND