Note: These linked pages and documents are for general information purposes only. Their accuracy or currency is not guaranteed. You are strongly encouraged to obtain up to date documents upon which you may base your flight decisions.
Edge of Space Sciences flies in compliance with the Federal Aviation Regulations.
Several groups are attempting to experiment with gliders and other aircraft. EOSS recently obtained the "Unmanned Aircraft Systems Operations in the U. S. National Airspace System - Interim Operational Approval Guidance" otherwise know as AFS-400 UAS POLICY 05-01.
I have converted this document to pdf and it is available:
In the preceding document (AFS-400 UAS POLICY 05-01) a reference is made to AC 91-57. This document lays out in an advisory manner (not regulatory) the suggested guidelines for model airplane flight procedures.