As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 3059 - IN CRUISE FLIGHT TO DTW, THE SMOKE WARNING LIGHT ILLUMINATED SEVERAL TIMES FOR 3 TO 5 SECONDS. NO EVIDENCE OF SMOKE NOTED. MAINTENANCE WAS UNABLE TO DUPLICATE THE DISCREPANCY. MECHANICS CLEANED AND RESECURED THE CANNON PLUGS AT THE SMOKE DETECTOR. THE WARNING CONTROL UNIT WAS REPLACED AS A PRECAUTION. (M)