What was found
FROM CRUISE, A LOW POWER DESCENT INITIATED. WHEN POWER APPLIED, ENGINE RPM DECREASED. PILOT ENTERED AUTOROTATION, POWER REAPPLIED AND ENGINE FLAME-OUT OCCURRED. ENGINE RE-STARTED AND 95 PERCENT N2, BUT WHEN POWER APPLIED FOR LANDING, ENGINE FLAME-OUT. AUTOROTATION LANDING MADE. TROUBLESHOOTING FOUND PT GOVERNOR MALFUNCTION AND WAS REPLACED. FLIGHT CHECK NORMAL.