As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG ODOR OF FUEL THROUGHOUT CABIN AND COCKPIT, AFTER SWITCHING FROM ENGINE BLEEDS TO APU BLEED DURING TAXI IN. DISCOVERED FUEL DRIPPING FROM THE APU. PERFORMED A NO GO ODI PREV. PROG. INSPECTION. FOUND APU FUEL SUPPLY LINE LOOSE AT THE FIREWALL IN APU BAY. SECURED THE LINE AND LEAK CHECKED GOOD.