As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACRID SMELL IN COCKPIT GOING THRU 14000 DESCENT. ON ARRIVAL NO SMELL IN CABIN , NOR COCKPIT. NO MSG FOUND. ACPD FAULT ISOLATION PROCEDURE PER FIM 21-00 TASKS 808 FOUND ALL NORMAL. NO EVIDENCE OF BIRD STRIKE ON BOTH ENGINE. RUN APU AND PACKS FOR ONE HOUR NO SMELL FELT. ACPD GROUND TEST EQUIPMENT COOLING AND GASPER, BOTH PASSED.