As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ROUTINE INSPECTION OF ENGINE REVEALED A LOOSE CENTER ELECTRODE (ABLE TO MOVE WITH FINGERNAIL). ALSO, INSULATOR ROTATED AROUND INSIDE IGNITER TIP HOUSING. IGNITER DID FUNCTION, HOWEVER POSSIBILITY OF CATASTROPHIC ENGINE DAMAGE EXISTED. PART HAS BEEN REPLACED UPON THE DISCOVERY.