About Experimental & Homebuilt Aircraft
Experimental and homebuilt aircraft are created and/or built by a private, amateur builder for their own recreation or education. These aircraft are constructed from scratch or using plans or kits, rather than by certified mechanics in a factory. CASA designates these non-factory models as amateur-built and experimental (ABE) aircraft. Not limited to jet- or piston-powered airplanes with single or twin engines, the ABE category also encompasses helicopters, gyros, gliders, and even balloons. Each can be registered with CASA as VH aircraft, or with a self-administering organisation if they fall within certain weight, performance, and design limitations.

Europa XS Monowheel
Some kit providers offer opportunities for their customers to construct portions of their kits in the factory with supervision. Lancair, for example, offers a Builder Assist Program purported to reduce build time by up to a year. Van’s Aircraft, another kit provider, estimates it can take 1,200 to 1,400 hours over several years to complete a standard kit. To be considered an ABE aircraft, however, the amateur builder must have fabricated and assembled the majority of the build.
Inspections & Airworthiness
The Experimental designation has been around for more than five decades, and aviation authorities have created strict aircraft definitions for non-commercial and recreational purposes. From one-of-a-kind designs and custom-built replicas to kits that follow builder plans, experimental and homebuilt aircraft must earn special airworthiness certificates from CASA.
Kits typically include the majority of an aircraft’s structural components, and builders have the freedom to customise the airframe with the latest technology or to preferred specs for the engine, propeller, and avionics. The Sport Aircraft Association of Australia (SAAA) offers a build support program, aircraft type transition training, and recurrent flight training for homebuilt aircraft, as well as flight operations and maintenance assistance from its local chapters.
Experimental and homebuilt aircraft tend to be less expensive than an equivalent certified aircraft, as the operator isn’t paying for the extensive and laborious certification process that aircraft built in a factory must undergo. That being said, CASA recommends that qualified personnel such as engineers or SAAA technical counsellors inspect the components of the aircraft during the build and before its first test flight.
Buying A Used Homebuilt Aircraft
When you’re looking for a used experimental or homebuilt aircraft to purchase, the SAAA can assist you with advice and suggestions. You’ll find a wide selection of types and designs, as well as aircraft in various stages of completion. For example, sellers may list barebones airframes that will require you to add the engine and avionics, or assembled airplanes in need of paint. These aircraft give you more freedom to customise the aircraft as you see fit. Other models come complete with all the certifications and equipment you’ll need to fly the aircraft right away.
Find The Right Experimental & Homebuilt Aircraft
You’ll find a host of new and used experimental and homebuilt aircraft for sale every day on AviationTrader.com.au, including models from leading brands such as Glasair, Lancair, and Van’s Aircraft.