What was found
ON FLIGHT 4498 - CREW REPORTED THE ODOR OF BURNING IN CABIN AND COCKPIT. FLIGHT ATTENDANT REPORTED SLIGHT HAZE IN CABIN IN CLIMB APPROX 15 MIN AFTER TAKEOFF. DISSIPATED QUICKLY (5MIN) WITH NR 1 BLEED AND RECIRCULATION FAN TURNED OFF. DIVERTED INTO CMI. AIRCRAFT REMOVED FROM SERVICE. UPON INVESTIGATION FOUND NR 2 ACM TO BE SEIZED AND NR 2 RECIRCULATION FAN TO BE MAKING NOISE. REMOVED AND REPLACE ACM AND NR 2 RECIRCULATION FAN. NO FURTHER SMOKE OR ODORS NOTED AT THIS TIME. AIRCRAFT RETURNED TO SERVICE. (A)