What was found
IAH - FLT 3865 - DURING CLIMB, THE CREW REPORTED SMOKE IN THE COCKPIT. THE CREW PERFORMED AN AIR RETURN AND LANDED WITHOUT INCIDENT. MAINTENANCE PLACED THE NR 1 AIRCONDITIONING PACK ON MEL 21-51-00, CAT C CONTROL NR 001233. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. MAINTENANCE PERFORMED OPERATIONAL CHECKS OF THE NR 2 AIRCONDITIONING PACK. NO SMOKE OR OTHER DISCREPANCIES WERE NOTED. THE AIR CONDITIONING PACK WAS REMOVED FROM MEL AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (M)