As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING ANNUAL FLIGHT TEST INSPECTION, DURING CRUISE AT FL180, THE ENGINE WAS VOLUNTARILY SHUTDOWN. 2 RE-START ATTEMPTS WERE UNSUCCESSFUL AND EMERGENCY WAS DECLARED BEFORE THE ACFT RETURNED TO THE DEPARTURE POINT WHERE AN UNEVENTFUL SINGLE ENGINE LANDING WAS MADE. POST FLIGHT GROUND RUNS SHOWED NO ANOMALIES. TROUBLESHOOTING IS ON-GOING.