As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) IN DESCENT AT AROUND 8000FT (ENG NR 1 NO DISPATCH) CAS MESSAGE ANNUNCIATED FOLLOWED BY SOME VIBRATION FROM LT ENG. N1 ROLLED BACK TO AROUND 25 PERCENT FOLLOWED BY CAS MESSAGE (ENG 1 SURGE PROTECT). THE CREW ELECTED TO SHUTDOWN THE ENGINE. MFG WILL CONTINUE INVESTIGATING THE EVENT AND ADVISE OF ROOT CAUSE ONCE ESTABLISHED.