As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN PARTS ARE MANUFACTURED, THEY ARE PAINTED WITH ZINC CHROMATE. SUBMITTER HAS FOUND ON NEARLY EVERY GOVERNOR DISASSEMBLED FRAGMENTS AND LARGE AMOUNTS OF PAINT LODGED UNDER O-RINGS WHERE THEY CONTACT SEALING AREAS. THEY CAUSE INTERNAL LEAKS AND EXTERNAL LEAKS AT THE CONTROL SHAFT. RECOMMEND ELIMINATION OF CHROMATE PRIMER ON PISTON AND COVER ASSY.