As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON TAXI, CREW EXPERIENCED A NR 1 ENGINE, ZONE 3, FIRE WARNING. THE ENGINE WAS SHUT DOWN AND THE ACFT RETURNED TO THE RAMP. MAINTENANCE DISCOVERED A FIRE LOOP CHAFING ON THE NACELLE VENT DOOR FLEX DRIVE. THE FLEX DRIVE WAS RE-POSITIONED, THE FIRE LOOP REPLACED AND THE ACFT RETURNED TO SERVICE.