As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLT 3686 - DURING CLIMB, THE CREW REPORTED SMOKE IN THE CAIN. THE AIRCRAFT RETURNED IAH WITHOUT INCIDENT, WHERE MAINTENANCE UNSTUCK THE RIGHT ACM AND OPERATIONLLY CHECKED. THE PROBLEM REPEATED ON FINAL FOR FLIGHT 3686 WHERE THE AIRCRAFT LANDED AT MLU WITHOUT INCIDENT. MAINTENANCE PLACED THE RIGHT ACM ON MEL NR 21-50-2 CONTROL NR 173565, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (M)