As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE PILOT REPORTED THE NR 2 ENGINE FLAMED OUT WHEN TRANSITIONING FROM IDLE TO FLIGHT. A TECH OUTSIDE OF HELICOPTER ADVISED OF WHITE SMOKE FROM ENGINE EXHAUST AT THE MOMENT OF ENGINE FLAMEOUT. SUBSEQUENT TROUBLESHOOTING COULD NOT REPRODUCE THE PROBLEM.