What was found
CREW REPORTED AN ACFT PACK ODOR WHEN PACKS ON APU DURING TAXI-IN. PERFORMED TROUBLESHOOTING OF CABIN AIR QUALITY IAW JOB CARD 26L00021001. FOUND THE APU TO BE SOURCE OF CABIN ODOR. FURTHER TROUBLESHOOTING FOUND A FUEL LINE LEAK. SECURED FUEL LINE, LEAK CHECKED GOOD. ACCOMPLISHED JOB CARD 26L0021002, APU SMELL IN CABIN. ACCOMPLISHED JOB CARD 26L00021004, DECONTAMINATION OF ENVIRONMENTAL CONTROL SYS ENG & APU. ACFT OK FOR SERVICE.