As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW WERE ON A TRAINING FLIGHT AND WENT THROUGH A SIMULATED ENGINE FAILURE. ENGINE WOULD NOT RESTART AFTER 3 ATTEMPTS. AIRCRAFT RETURNED TO BASE. MAINTENANCE FOUND THE START PRESSURE REGULATOR TO BE AT FAULT. PART WAS REPLACED AND AIRCRAFT RETURNED TO SERVICE AFTER SUCCESSFUL ENGINE STARTS IAW MM.