As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT FROM ANC AVIONIC SMOKE WARNING ILLUMINATED THREE TIMES ABOUT TWO MINUTES APART. CREW RETURNED TO ANC WHERE MX INSPECTED SYSTEM AND FOUND SYSTEM TO BE GIVING FALSE WARNING. SYSTEM WAS DEFERRED AND FLIGHT CONTINUED NORMAL. THE NEXT DAY SMOKE DETECTOR WAS CLEANED AND SYSTEM ACTIVATED.