As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BLACK BILLOWING SMOKE WITH A STRONG ODOR IN COCKPIT & CABIN, DISSIPATED ON LEVEL OFF. FLT 4476 INSPECTED AFT EQUIPMENT BAY FOUND LARGE SUMS OF GLYCOL, CLEANED AS NECESSARY. RAN BOTH PACKS WITH ENG. NO SMOKE PRESENT IAW AMM. RAN PACKS ON APU NO SMOKE PRESENT IAW AMM.