As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE CEFA OIL FILTER BYPASS INDICATOR POPPED OUT. INVESTIGATION REVEALED THE IMPENDING BYPASS INDICATOR ON THE CEFA OIL FILTER BOWL FELL APART. A RETAINING CLIP BROKE AND PARTS OF IT WERE FOUND IN THE OIL SYSTEM. SPRING, PRESSURE PLATES AND POPPET WERE ALSO RECOVERED.