AeroFred, AviationShoppe.com, ParkJets and SparkFlyers.com offer free PDF, Zip and digital downloads of model airplanes online. AeroFred.com requires a free member account; plans from magazines are available after completing a simple registration process.
ParkJets.com lets users add model airplane plans to a shopping cart; checkout requires a billing and email address and the automated system sends the free plans by email in PDF files. The plans break down different components of the planes in sections to scale.
Plans from SparkFlyers.com come in PDF format and provide scaled dimensions and suggestions for materials. AviationShoppe.com’s plans divide images into multi-page PDF documents, available in different languages.