As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: SMOKE CREW REST FLIGHT DECK ILLUMINATED FOR 20 SECONDS DURING DESCENT. INSPECTION OF FLIGHT DECK CREW REST AREA REVEALED NO EVIDENCE OF SMOKE. COMPLIED WITH FIM TASK 21-29-00. MAIN DECK CREW REST ENVIRONMENTAL CONTROL SYSTEM OPERATIONS. TEST SHOW GROUND TEST PASS.