As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT HAD POWER SECTION AND GOVERNORS OVERHAULED AFTER PROP STRIKE INCIDENT. FIRST TEST RUN ON AIRCRAFT AFTER OVERSPEED GOVERNOR INSTALL, THE NEW GASKET WAS LEAKING FROM AROUND A STUD HOLE. WE RE-INSTALLED ORIGINAL GASKET AND NO LEAK. THIS IS THE SECOND ONE OF THESE GASKETS I KNOW OF WITH AN ISSUE.