As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE PREFORMING 30 INSPECTION OF THE MAGNETIC PLUGS ON THE ENGINE AS I WAS WIPING THE PLUG WITH A RAG I FELT SOMETHING "GIVE" I WHEN I LOOKED AT THE PART I SAW THE TIP OF THE MAGNETIC PLUG HAD BROKEN OFF. TO THE BEST OF KNOWLEGE THIS PART HASN`T BEEN DROPPED OR MISHANDLED.