As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FOLLOWING LANDING, PRIOR TO SHUTDOWN, FUMES WERE SEEN COMING FROM THE #1 ENGINE NACELLE. THE FIRE EXTINGUISHERS WERE ACTIVATED. INSPECTION REVEALED FOUR FUEL NOZZLE "O" RINGS DAMAGED. THE "O" RINGS WERE REPLACED AND THE AIRCRAFT RETURNED TO SERVICE. THE "O" RINGS HAD BEEN REPLACED 24 HOURS PRIOR TO THIS INCIDENT.