What was found
INSPECTION TYPE:N/A SMOKE IN THE C/P ON TOP OF DESCENT. COULD NOT LOCATE SOURCE. DID NOT SMELL ELECTRICAL. COMPLETED C/P SMOKE/FUME EVACUATION CHECKLIST. SMOKE WAS MODERATE TO HEAVY FROM GLARESHIELD-AREA THROUGH WHOLE UPPER DECK. ADJUSTED NR 1 & 4 ENG N2 GROUND IDLE PER MM 71-00-00. NR 2 ENG NR 2 IP BLEED VALVE ACOUSTICAL ATTENUATOR BLOWN THROUGH, REMOVED AND REPLACED SAME NR 1 ENG RUN REQ FOR LEAK CHECK AND IGN VERIFICATION RUN NR 1 ENGINE, NO LEAK NOTED. NR 2 ENG RUN REQUIRED FOR LEAK CHECK. RAN NR 2 ENGINE, NO LEAK NOTED.