As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CREW REPORTED UPON ACTIVATION OF NR 1 PACK, OBSERVED SMOKE AND A BURNING ODOR IN THE FLIGHT DECK. CREW REPORTED HEARING ABNORMALLY LOUD AND UNUSUAL NOISES AND PASSENGER IN SEAT 1A REPORTED SMOKE. MAINTENANCE INSPECTED AND REPLACED THE NR 1 AIR CYCLE MACHINE. OPS CHECKS WERE GOOD.