What was found
DURING APPROACH RT ENGINE AUTOFEATHER ACTIVATED. PROP RPM FLUCTUATED UNTIL AUTOFEATHER SWITCH TURNED TO OFF POSITION
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING APPROACH RT ENGINE AUTOFEATHER ACTIVATED. PROP RPM FLUCTUATED UNTIL AUTOFEATHER SWITCH TURNED TO OFF POSITION