What was found
APU BLEED LEAK MSG WITH ODOR. STEP 1-T/S AND FOUND APU DUCT BLOWN IAW AND WORKCARD 0550-2001. STEP 2 P-TRAK SNIFFER NOT AVAILABLE STEP 3 FOUND SOURCE TO BE APU BLEED DUCT(P.AUTAR 631639) STEP 4 N/A DUE TO SOURCE BEING BLOWN APU DUCT. REMOVED & REPLACED DUCTS PER A220 AMM 36-16-09. LEAK CK GOOD. REPLACED RECIRC FILTER PER A220 AMM 21-22. RAN BOTH ENGINES PER A220 AMM 71-00. ALL CKS OK. C/W STEP 7. (LP# 1503038)