What was found
UNSHEDULED LANDING, FLIGHT 5045, AFTER TAKEOFF AT APPROXIMATELY 8000FT. PILOTS REPORTED SMOKE THAT APPEARED TO BE COMING FROM THE RT SIDE PANEL. MAINTENANCE PERFORMED HIGH POWER ENGINE RUNS AND PERFORMED OPERATIONAL CHECKS OF THE ENVIRONMETAL SYSTEM. MAINTENANCE FOUND THE LT RECIRCULATION FAN INOPERATIVE AND PLACED THE AFFECTED ITEM ON MEL 21-25-1 CATEGORY C. MAINTENANCE REMOVED AND REPLACED THE RECIRCUALTION FAN PER EMB-120 MM 21-25-02. OPERATIONAL CHECK NORMAL.