FREDsTL

I installed a Surefly in my C182 in October. A few weeks later had the first event occur taking off from the airport on a moonless night. I had to declare and landed immediately. Since it functioned well for several weeks, i thought maybe a bird hit the propeller. BUT, after much investigation, several pattern only test flights during the day and review of all my G1000 data we concluded that we were getting the voltage spike shut down issue. After installation of the power filter all has been fine. I truly believe that they should just supply the damn filter for all 24 volt systems. It is a butt puckering experience to have unnecessary apparent mag failures, especially at night when you can't tell what has happened with certainty. Said all of this to the FSDO as well which investigated.