At 21:24 06 February 2004, Chuck wrote:

I don't know how the reg's work with gliders.
Does he need to have an STC to
do this?

In general:

The majority of gliders operate under the same FARs
as small airplanes. The way I understand it, an STC
and/or 337 paperwork is only required if the glider
holds type certification and a standard airworthiness
certificate, and then only if it is determined that
the addition constitutes a major modification.

If the glider holds Experimental certification (either
Racing, Exhibition, or Amateur-Built) and a Special
Airworthiness Certificate, probably all that is required
is a logbook entry by the installer. For Experimentals,
the operating limitations that accompany the airworthiness
certificate will probably have specific instructions
about modifications.

Thanks, and best regards to all

Bob K.
http://www.hpaircraft.com