What was found
ANC - ABORTED TAKEOFF OF FLT 151, BOTH THE FIRST OFFICERS AND OBSERVER NOTED SMOKE IN THE COCKPIT DURING TAKEOFF. BOTH PACKS WERE TURNED OFF AS AIRCRAFT CLEARED RUNWAY. ANC MAINTENANCE INSPECTED BOTH ENGINES AND APU INLETS AND EXHAUST, NO DEFECTS NOTED. RAN ENGINES AT TAKEOFF POWER AND ISOLATED PACKS, COULD NOT DUPLICATE SMOKE/SMELL. RAN APU, COULD NOT DUPLICATE SMOKE/SMELL. INSPECTED A/C BAY DUCTS AND E/E COMPARTMENT. NO DEFECTS NOTED. REPLACED BOTH WATER SEPARATOR BAGS, BOTH WERE FOUND TO BE CLEAN. AIRCRAFT WAS RELEASED FOR SERVICE. (M)