As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING A PRE-FLIGHT MAGNETO CHECK, THE RIGHT HAND MAGNETO WAS FOUND LIVE WITH THE MAG SWITCH SELECTED OFF. INSPECTION FOUND THE CONDENSER WOULD CREATE AN OPEN CIRCUIT WHEN SLIGHT PRESSURE APPLIED TO THE TERMINAL WIRE ATTACHMENT. THE MAGNETO WAS REPLACED, CHECKED SERVICEABLE ,AND THE AIRCRAFT RETURNED TO SERVICE.