As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND 3 OUT OF 4 NEW FILTERS SENT FROM CESSNA (NEW FILTERS) WITH AT LEAST ONE LOOSE RIVET. RIVETS FOUND BAD ARE NOT INSTALLED PROPERLY AND COULD POSSIBLY ENTER ENGINE AND CAUSE MAJOR DAMAGE, BETTER QUALITY CONTROL COULD REMEDY THIS PROBLEM WHICH IS QUITE SERIOUS.