As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELECTRICAL ODOR FILLED COCKPIT AND CABIN ON DESCENT. (FLT 7399) REPLACED P2.5/P3 PRESSURE SWITCH IAW AMM OPS CHECK GOOD, OPERATED PACKS FOR SEVERAL MINUTES NO UNUSUAL SMELLS. INSPECTED ELECTRICAL COMPONENTS IN COCKPIT WITH NO DEFECTS NOTED. P/N- 1103P273