As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF AVIONICS SMOKE WARNING CAME ON THEN EXTINGUISHED IMMEDIATELY PER QRH. MAINTENANCE COMPLETED SELF TEST OF AVIONICS SMOKE DETECTOR WITH FLIGHT DECK SMOKE TEST SWITCH SEVERAL TIMES. ALL CHECKS GOOD. INSPECTED AVIONICS COMPARTMENT FOR DEFECTS COVER HEATING, SMOKE ETC. NO DEFECTS NOTED. DEFERRED AVIONICS SMOKE DETECTION SYSTEM PER MEL 26-13-3 (B) ENTERED INTO DMR.