What was found
ORD - FLT 288 - EN ROUTE OAK-JFK - AT FLIGHT LEVEL 410, FLIGHT ATTENDANT REPORTED BURNING SMELL AND HAZE NEAR READING LIGHTS THROUGHOUT CABIN. RIGHT AFT LAVATORY SMOKE DETECTORS STARTED CHIMING. EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO ORD WITHOUT INCIDENT. FOUND RIGHT CABIN AIR RECIRCULATION FAN OVERHEATING. REPLACED RECIRCULATION FAN. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)