It looks like some of the Doyn STC's were re-issued to KWAD Company in
Atlanta. Mainly fiberglass assemblys such as fairings, dorsal fins, wheel
pants for several aircraft.
Jim


"JAX" wrote in message
oups.com...
I've seen some Apaches listed that are 'Doyne conversions' but I can't
find what the conversion involved, except maybe 180hp engines. I know
about Geronimos, but what exactly makes up a Doyne conversion Apache?