Thanks Gengis
That takes some trawling and I still can't get my head quite around it
There still seems to be no real definition, just loads of standards and generalisations ... ie A powered sailplane is an aircraft that displays the same characteristics of a sailplane when not under power ... hmmmm
What about a basic summary of types? Is there one anywhere?
The kind of thing I mean is like the usual microlight definition, ie max weight, wing loading, ect ect.
SS