As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER STARTING APU AND TURNING ON THE PACKS. HAD SMOKE COMING OUT OF DUCTS. R & R NR 3 PACK COALESCER BAGS, RAN APU, CLEARED FUMES FROM AIR CONDITIONING DUCTS. RAN NR 2 PACK IAW AMM AMM 21-00-01-5. NO SMOKE NOTED. RAN ALL 3 ENGINES AT HIGH POWER FOR 45 MINUTES IAW JRH. NO DEFECTS NOTED. R & R NR 2 PACK COALESCER BAG IAW 21-53-00-7.