Free plans. Vintage and old-timer plans. Searchable database, all plans tagged and sorted. Current total (Sep 2015) is over 6,700 free plans.
The mother of all RC modeller forums.
Lots of great stuff. Earl Stahl plans.
Kenny's Old Time Model Airplane Magazine
Taking a serious look at the art of miniature aviation. The HPA Builders' Forum and HPA Builders' Plan Gallery have thousands of useful files.
Co-op plan project. A cooperative effort to digitally record against loss as much of the history of model aviation as possible and make the information available to modelers worldwide at a minimal cost.
Paid subscribers get either PDF downloads or plans printed on paper and snail-mailed out to members, monthly newsletter.
SAM - the Society of Antique Modelers. A world-wide community dedicated to the building and flying of Antique Model Aeroplanes.
Photo gallery of old timers, stick and tissue FF IC models.
Links to old magazine archives for download.
Free model airplane plans
Lots of free flight stuff and plans - site is in Spanish
ADAG design - German language site with lots of free plans by Arno Diemer.
Walkaround photo galleries of historic aircraft
Mike's flying scale model pages. Lots of good free stuff, articles, plans, pics.
Articles and notes, some plans, RC, free flight and indoor models.
Free plans in various formats
Massive archive of 3-views for scale builders
Free listing of vintage plans, downloads.
Depron foam pusher-prop parkjets. About 80 free plans for download, with links to build threads.
some low-resolution plans
Plans exchange site. Currently over 40,000 files and counting
Flying boat reference website, information for the scale modeler, historian and enthusiast
Free model boat plans. Complete set of Keil Kraft EeZeBilt boats, designed by Ernie Webster.
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