As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - DURING MAINTENANCE INSPECTION THE CAPTAINS GLARESHIELD PUSH TO TALK SWITCH SHOCKED AND SMOKED WHEN DEPRESSED. MAINTENANCE REMOVED AND REPLACED THE AFFECTED SWITCH, OPERATIONALLY CHECKED WITH NO DEFECTS, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.