What was found
CREW REPORTED A BURNING SMELL IN COCKPIT AND BACK TO ROW NR 2 IN FLIGHT. F/O’S RA FLAG WAS FLASHING AT TIME OF SMELL. AN EMERGENCY LANDING / DIVERSION WAS MADE TO ATL. LANDING IN ATL WAS MADE WITHOUT INCIDENT. MAINTENANCE CHECKED THE AVIONICS COMPARTMENT, AIR CONDITIONING SYSTEM, PASSENGER CABIN LIGHTS, FLIGHT DECK LIGHTS, GALLEY AREA, AND RA SYSTEM PER AIRCRAFT MAINTENANCE MANUAL. NO DEFECTS NOTED. AIRCRAFT WAS RELEASED FOR SERVICE.