What was found
THE PUSH ROD METAL INSERT ON THE VALVE END BECAME LOOSE. THIS ALLOWED THE INSERT TO POUND AGAINST THE METAL TUBE, CURLING THE METAL OVER, UNDER THE INSERT TO THE OUTSIDE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
THE PUSH ROD METAL INSERT ON THE VALVE END BECAME LOOSE. THIS ALLOWED THE INSERT TO POUND AGAINST THE METAL TUBE, CURLING THE METAL OVER, UNDER THE INSERT TO THE OUTSIDE.