As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COCKPIT AND CABIN FILLED WITH SMOKE DURING TAXI. SMOKE ALARM ACTIVATED. ALSO, HAD PACK FAIL ILLUMINATION FOR LEFT SIDE AND HOT AIR DISCHARGE IN COCKPIT ON BOTH AUTO AND MANUAL. REPLACED ACM/FOUND UNIT TO BE SEIZED. OPS CHECKED GOOD AFTER REPLACEMENT. RETURNED TO SERVICE. (X)