What was found
(CAN) ENGINE FAILED IN FLIGHT, AIRCRAFT HAD JUST EXITED ICING CONDITIONS, CONTINUOUS IGNITION WAS TURNED OFF A FEW MINUTES PRIOR TO ENGINE FAILURE. AIRCRAFT RETURNED TO BASE AND ENGINE WAS INSPECTED FOR ANY CAUSE OF THE FAILURE, NOTHING WAS FOUND. GROUND/POWER RUNS WERE CARRIED OUT AND FOUND SERVICEABLE, CONDITIONAL MAINTENANCE RELEASE WAS SIGNED FOR A TEST FLIGHT. TEST FLIGHT WAS CARRIED OUT AND AIRCRAFT RETURNED TO BASE WITH ALL ENGINE PARAMETERS WITHIN LIMITS.