As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FLIGHT ENROUTE, FLIGHT CREW REPORTED INCREASED VIBRATIONS COMING FROM NR 1 ENGINE AND SPARKS REPORTED ON VISUAL INSPECTION. CREW SHUTDOWN ENGINE AND DECLARED AN EMERGENCY. AIRCRAFT RETURNED AND LANDED WITHOUT FURTHER INCIDENT. ENGINE CHANGE BEING CONDUCTED AND ENGINE TO BE SENT TO OVERHAUL FACILITY FOR INVESTIGATION. WILL FOLLOW UP WITH RESULTS OF OVERHAUL.