As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) UPON ARRIVAL AT THE GATE MAINTENANCE CAME ONBOARD AND NOTIFIED THAT A FUEL LEAK WAS NOTICED ON ENG NR 2. FIRE HANDLE WAS PULLED AND CFR CALLED. CLOSER INSPECTION REVEALED THAT A CLAMP WAS FOUND CHAFING ON THE FUEL FEED LINE FROM THE HEAT EXCHANGER TO FCU.