As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLT 3386 - AVIONICS SMOKE CWP LIGHT CAME ON DURING FLIGHT. DECLARED EMERGENCY AND LANDED AT NEAREST AIRPORT. NO ACTUAL SMOKE OBSERVED. ALARM WAS INTERMITTENT. REMOVED AND REPLACED AVIONICS SMOKE DETECTOR. SYSTEM OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (M)