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ADS-B and engine driven CDI

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DRFlyer

Member
Joined
Jul 29, 2019
Messages
14
Location
Detroit Area, Michigan
Hey all, I had a question regarding ADS-B out requirements and the ignition system of a myriad of smaller 2-strokes and auto conversions. I understand the requirement is that you must have a mode-S capable transponder with ADS-B reporting if you operate in class C, B, or within the mode C veil (which I very much do), and that you are exempt from this requirement if you don't have an engine driven electrical generator.

If I use a small 2-stroke like a 503 or Hirth F-23, or some sort of auto conversion like a Suzuki or BMW motorcycle engine, most of these engines employ a generator to provide power to a CDI or points ignition. If the electricity is only used to power ignition, would I still need to add a transponder and gps to my aircraft? It would seem a bit strange for a 2-stroke fat ultralight to need one, but the language seems to indicate that fact.
 
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