As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER TAKE OFF CREW OBSERVED SPARKS AND GLOW FROM RT ENGINE COWL. CREW SHUTDOWN RT ENGINE AND RETURNED TO AIRPORT. MAINTENANCE FOUND THE FLEXIBLE HOSE FROM THE EXHAUST STACK TO THE LIP HEATER HAD CRACKED AND SEPERATED FROM THE COWLING. THIS ALLOWED THE EXHAUST THAT WAS INTENDED FOR THE INTAKE HEATER TO ENTER THE FORWARD COWLING. COWLING WAS REPLACED WITH SERVICEABLE UNIT AND FLEXIBLE HOSE WAS REPLACED ON COWL THAT WAS REMOVED.