As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) IGNITORS WERE FOUND TO BE MISSING THE CERAMIC COATING WHICH IS REQUIRED TO PREVENT THE INGNITION LEAD SPRING FROM ARCING INSIDE THE LEAD BARREL. (FLASH OVER). AVIALL, AIRCRAFT HEATERS, API AND ELECTRO SYSTEMS ARE AWARE OF THE QA PROBLEM.