What was found
EN ROUTE BETWEEN DFW AND TOL, THE USE OF THE NR 2 ENGINE ANTI-ICE PRODUCED AN ODOR SIMILAR TO A BURNED MATCH, BUT THE ODOR DISSIPATED OVER THE COURSE OF THE FLIGHT. IN TOL, A GROUND RUN WAS ACCOMPLISHED WITH THE AIRCRAFT CLOSED. BOTH AIR CONDITIONING PACKS WERE OPERATED AS WELL AS ALL FOUR ENGNE ANTI-ICE SYSTEMS. ALL SYSTEMS OPERATED NORMALLY WITH NO ODOR BEING PRODUCED. THE AIRCRAFT WAS RETURNED TO SERVICE. (M)