As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING AN OIL CHANGE, IT WAS DISCOVERED THE DIAGONAL STIFFENERS ON BOTH SIDES OF THE OIL COOLER WERE BROKEN AND HALF GONE. THE OIL COOLER WAS NOT LEAKING. THE OIL COOLER WAS REPLACED WITH NEW. INSTALLED PART NUMBER: 658767, SERIAL NUMBER: H22-12342-245. ENGINE RUN UP AND LEAK CHECK WAS GOOD WITH NO LEAKS NOTED.