What was found
ON BOARDING ACFT WITH APU RUNNING, A STRONG ODOR WAS NOTICED. IT SMELLED LIKE A MUSTY BURNING OVEN CLEANER. THE APU BLEED WAS TURNED OFF NO VISIBLE ODOR WAS NOTICED. ODOR WAS IN COCKPIT AND CABIN. ISOLATED SOURCE OF SMOKE & FUME ODOR TO APU OIL LEAK. C/W W/C 0550- 2002. COMPLIED WITH LEVEL B DECONTAMINATION & ECS REVERSE DUCT BURN PROC. PER W/C 2100-2005. RAN BOTH ENG'S W/ BOTH BLEEDS TOGETHER + SEPERATLY AT HIGH PWR FOR 45 MINS. R+R'D BOTH CABIN RECIRC FILTERS PER A320 AMM 21-21. PERFORMED CONFIRMATION RUN OF BOTH ENG'S + PACKS, NO ODORS THROUGHOUT CABIN. A/C OKAY FOR SVC. (LP: 8036074)