What was found
WHILE TESTING AUTO FEATHER DURING RUN UP THE RH PROP WENT TO FEATHER AND WOULD NOT COME OUT OF FEATHER. DETERMINED CAUSE TO BE OVERSPEED GOVERNOR. INSTALLED OH GOVERNOR OPS CHECKED OK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE TESTING AUTO FEATHER DURING RUN UP THE RH PROP WENT TO FEATHER AND WOULD NOT COME OUT OF FEATHER. DETERMINED CAUSE TO BE OVERSPEED GOVERNOR. INSTALLED OH GOVERNOR OPS CHECKED OK.