![Aircraft designs now can be built in a fraction of the time necessary in the early days of homebuilding. [Credit: Adobe Stock]](https://www.kitplanes.com/wp-content/uploads/2026/02/AdobeStock_1336488-1024x682.jpg)
It’s a familiar scene, replayed in garages and workshops across the country for the better part of a half-century: the arrival of an airplane kit. For some, it’s a stack of boxes and a long tube or two containing the raw material of their dream. For others, it’s a near-complete fuselage and wings, carefully packed and shipped, already looking very much like an airplane. The difference between those two scenarios encapsulates a massive shift in the world of experimental amateur-built aircraft, a revolution that has changed not just how we build, but who builds.
If we rewind to the late 1970s and early 1980s, the homebuilding scene was a very different landscape. Thinking back to the earliest days of what would become the kit plane boom, I recall a series of steps that are virtually unheard of today, starting with getting a call to pick up the kit shipment at a freight company dock. Once the crates were in the garage or shop, there came a moment of reckoning as the unpacking began. “What have I just spent $1,800 on?” “Can I do this?”
Unpacking the unrecognizable pieces of extruded tubing, undrilled stainless-steel tangs, and bare, unswaged steel cables, and an engine, I finally arrived at the manila envelope. The envelope contained everything I would need to assemble the array into a flying machine. Or did it? In those early days, plans and diagrams could run the gamut from excellent to sketchy, (pun intended).
Homebuilding was helped to a substantial degree by the economics of commercially manufactured certificated general aviation aircraft. Though the coast of everything soared in the ‘80s, the price of airplanes increased disproportionately. Prices of Cessna singles leaped above $50,000; by mid-decade, the price of an IFR equipped Beech Bonanza flirted with six figures. The coast of manufacturing and marketing an airplane had increased alarmingly, driven in large part by the cost of product liability insurance. By 1986, Cessna’s Dean Humphry told the Los Angeles Times that the company “got out of the single engine plane business.” He then put the situation in stark perspective: “In the late 1970s, we were selling nearly 9,000 a year. That number plunged to 640 last year (1985).” Cessna resumed building the 172 in the mid-1990s, by which time the price of the airplane was $125,000.
It was a time of immense innovation, but also one that demanded a deeper and more varied skill set from the builder. Designs like Burt Rutan’s VariEze and Long-EZ captured the imagination with their futuristic shapes and impressive performance but building one was a tougher road versus today’s bolt-together kits. These were often plans-built or very basic kits, requiring the builder to engage in moldless composite construction, a novel and sometimes messy process involving fiberglass cloth and epoxy resin.
For those working with metal, the situation was similar. Early kits for designs that would become legendary, like Van’s first RV models, were a significant step up from pure scratch-building, but they still put the “fabrication” in homebuilding. A builder was expected to interpret plans, lay out rivet lines, and drill thousands of holes, often using a pre-punched skin as a template to drill the underlying structure. It was a process that demanded precision, patience, and the willingness to build complex jigs to ensure everything stayed aligned. Welding was another common requirement that confounded many builders back then. Builders were often expected to fabricate their own fuselage cages, engine mounts, and exhaust systems from raw tubing. The shop of an early kit builder often contained the tools and machinery that resembled a small-scale factory. I grew up in an ancient FBO built in the 1940s with a shop that contained a wide array of then-essential tools such as metal brakes, sand blasters, myriad gas welding sets, propeller jigs, and walls lined with shelves containing dope and fabric products. Today, a garage is sufficient to undertake a kit project, and I routinely see photos of people assembling rudders and elevators on their kitchen table.
The result of what amounted to a practical barrier to entry to homebuilding was a two-fold.
On one hand, it fostered a community of incredibly skilled and resourceful builders. On the other, it led to a significant number of projects that never flew. While precise data from that era is hard to come by, it’s widely accepted that the ratio of kits sold to aircraft completed was much lower than it is today. Some estimates suggest that for plans-built designs, the completion ratio could have been in the single- or low-double digits as a ratio. Even for kits, many fell by the wayside as builders ran out of time, money, or the specific skill required for the next step. Life changes, a loss of motivation, or underestimating the sheer scale of the undertaking left countless fuselages and wing assemblies gathering dust.
The turning point, the innovation that truly democratized kit building, was the rise of CNC (Computer Numerically Controlled) machining and, specifically, the development of what we now call matched-hole technology. The concept was pioneered by designers like John Thorp with his T-18, which featured a form of pre-punched, easily assembled parts that he called a “hole-coordination template technique”. This was revolutionary for its time, allowing large assemblies to be clecoed together with the precision of an Erector set, without the need for complex jigs.
By the late 1990s and into the 2000s, companies like Van’s Aircraft had heavily invested in this process, powered by industrial-grade CNC punch presses. The process is simple in concept but transformative in practice: the computer-aided design (CAD) for every part of the airframe includes the exact location of every single rivet hole. The CNC machine then punches these holes into the flat aluminum sheets with a degree of accuracy that is nearly impossible to replicate by hand. When the builder receives the parts, the holes in a fuselage skin line up perfectly with the holes in the underlying bulkheads and stiffeners. The structure effectively becomes self-jigging. If the holes line up, the assembly is straight.
This single development dramatically reduced the most time-consuming and error-prone part of metal aircraft construction. The tedious process of laying out, drilling, deburring, and often re-drilling holes was largely eliminated. It shifted the primary task of the builder from fabrication to assembly. One can see the difference starkly by comparing an early kit’s contents—piles of unmarked aluminum sheets and extrusions—with a modern one, where pre-formed, pre-punched parts are ready to be joined together right out of the box.
Alongside this came the rise of quick build kits. Manufacturers began offering major subassemblies, like the fuselage or wings, largely completed at the factory. This allowed builders to bypass hundreds of hours of work while still complying with the FAA’s “51% rule,” which stipulates that the amateur builder must perform the majority of the fabrication and assembly. This, combined with builder-assist programs where builders travel to the factory for a concentrated period of construction under expert supervision, has further increased the likelihood of a project being finished [7].
The data reflects this shift. While still a significant commitment, the completion rate for modern kits is vastly higher than in the early days. For Lancair, a company known for its high-performance kits, records show that about 1,100 of the 2,250 kits sold have been completed and flown—a rate approaching 50%. Some sources suggest a 50% completion rate is a reasonable estimate for the modern market as a whole, a stunning improvement from the 10-to-1 odds of a generation ago. Manufacturers like Zenith have noted that the ease of modern kits means their support staff, while serving far more customers, has remained about the same size because builders simply have fewer questions.
This evolution has fundamentally changed the homebuilding community. The builder of today may not need to be a master fabricator, a dope-and-fabric guru, a welder, or a composite expert. Instead, the key virtues are patience, diligence, and the ability to follow a detailed set of instructions. It has opened the door to a wider range of people who have the passion for aviation but perhaps not the specialized metalworking or fabrication background that was once a virtual prerequisite.
Of course, something is lost as well as gained. The deep, intimate knowledge of an aircraft that comes from fabricating every piece from raw stock is a different experience from assembling prefabricated components. There’s a certain romance to the idea of the lone craftsman toiling away, mastering a dozen different trades to bring an airplane to life. But the reality is that the accessibility and high quality of modern kits have strengthened the experimental aircraft movement immensely, resulting in safer, more consistent, and, most importantly, more completed aircraft. It has allowed the fleet of homebuilts to grow steadily, in some years outpacing the production of any single certified manufacturer.
Looking back at the garages and shops of the 1980s, filled with raw materials and ambitious plans, and comparing them to the workshops of today, where precise, matched-hole parts come together with satisfying clicks of clecos, it’s clear how far we’ve come. The dream of building one’s own aircraft is more achievable now than ever before. Those who pursue the dream of flight are no less ambitious or determined, but the obstacles have been engineered and refined to be more manageable.
