What was found
OCCASIONAL OIL SMELL IN THE COCKPIT COND AIR, NOT REPORTED IN THE CABIN. ACP ENG RUN. FOUND SMELL COMING FROM APU. DF APU^21NOV IAD INF- CHECKED ALL MAGNETIC CHIP COLLECTOR FOR APU, NO METAL NOTED, REMOVED APU CHECK VLV PER MM. NO OIL NOTED AND INSPECTED SURGE VLV DUCT. NO OIL NOTED. ALSO REF: FIM 49-10 TASK 808 NOTE: 3(A)(1) & CHECK FOR FOREIGN FLUIDS AT INLET THAT MAY BE INJESTED. U4-2379^21NOV IAD. REPLACED BOTH RT AND LT OZONE CONVERTER IAW MM. LEAK CHECK OKAY. RH OZONE CONVERTER OFF IS MR21753-122 ON 133, LT OFF MR21753-22 ON 43.