What was found
WHILE IN NORMAL FLIGHT, EXHAUST VALVE FAILED CAUSING ENGINE TO SHUT DOWN. AIRCRAFT WAS AUTOROTATED SAFELY TO THE GROUND WITHOUT FURTHER DAMAGE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE IN NORMAL FLIGHT, EXHAUST VALVE FAILED CAUSING ENGINE TO SHUT DOWN. AIRCRAFT WAS AUTOROTATED SAFELY TO THE GROUND WITHOUT FURTHER DAMAGE.