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Stoddard-Hamilton Aircraft

American aircraft designer and kit supplier best known for the composite Glasair series and the high-wing Glastar.

Last updated August 25, 2026

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Overview

Stoddard-Hamilton Aircraft was an American designer and supplier of high-performance homebuilt-aircraft kits based in Arlington, Washington. Rather than manufacturing completed production aircraft for the general aviation market, the company supplied amateur builders with aircraft plans, components, and kits that could be assembled into experimental aircraft. Its best-known product family was Glasair, a line of low-wing, two-seat aircraft built around fiberglass composite construction and intended to offer substantially higher performance than many conventional homebuilt designs. The company was established by Tom Hamilton. Its name was formed from Hamilton's middle and last names and deliberately echoed the naming style used by large American aircraft manufacturers. This gave the business a formal-sounding identity while reflecting its position in the enthusiast-oriented homebuilt-aircraft sector. Stoddard-Hamilton's principal commercial contribution was the development and marketing of composite aircraft kits that made advanced molded-fiberglass construction available to individual builders. The Glasair TD, introduced at the 1980 EAA Oshkosh Airshow, was described as the first pre-molded composite aircraft kit offered on the general aviation market. The design established the direction of the company: compact, two-seat aircraft with low-mounted wings, side-by-side seating, and an emphasis on speed and aerodynamic efficiency. Later Glasair variants added features such as retractable landing gear and more powerful engines. The Glasair III Turbo became the performance flagship of the line, with a published capability exceeding 300 mph, or approximately 483 km/h. Another Glasair development was fitted with a turboprop engine, demonstrating the breadth of the platform's performance experimentation. During the mid-1990s, Stoddard-Hamilton expanded beyond the low-wing Glasair concept with the Glastar. This was a two-seat, high-wing utility aircraft designed with short-field capability and a more practical mission than the faster Glasair models. The addition broadened the company's offering from high-performance sport aircraft toward a utility-oriented homebuilt design while retaining the kit-built business model. Stoddard-Hamilton subsequently entered bankruptcy. In 2001, Thomas W. Wathen purchased the Glasair assets from the bankrupt company. He combined New Glasair LLC with New GlaStar LLC and continued production of the Glasair and Glastar kits at the Arlington factory under the Glasair Aviation name. As a result, Stoddard-Hamilton Aircraft is best understood as the historical manufacturer and brand associated with the original Glasair and Glastar development, while later continuity of those product lines was carried by successor operations rather than by the original company itself.

History

Stoddard-Hamilton Aircraft developed within the American amateur-built and experimental-aircraft movement. Founded by Tom Hamilton, the company adopted a name derived from Hamilton's middle and last names, with a tongue-in-cheek resemblance to the formal names of major American aircraft manufacturers. Its business model centered on supplying aircraft plans, parts, and kits to individual builders rather than delivering certified, factory-built aircraft. The company's defining technical direction was the use of molded fiberglass composite structures for small, high-performance aircraft. The Glasair TD, associated with 1979 development and introduced publicly at the 1980 EAA Oshkosh Airshow, was described as the first pre-molded composite aircraft kit available on the general aviation market. Its low-wing, two-seat, side-by-side configuration emphasized aerodynamic cleanliness and speed. By supplying pre-molded components, Stoddard-Hamilton helped reduce some of the fabrication burden traditionally associated with scratch-built or metal homebuilt aircraft, while leaving final assembly and completion to the customer-builder. The Glasair family expanded through variants with retractable landing gear and increasingly powerful engines. The Glasair III Turbo represented the most aggressive performance direction identified in the available historical record, with a capability exceeding 300 mph. A separate development was fitted with a turboprop engine, illustrating the platform's adaptability and the company's interest in high-performance propulsion. These aircraft positioned the Glasair name toward the faster and more technically ambitious end of the homebuilt-aircraft market. In the mid-1990s, Stoddard-Hamilton introduced the Glastar, a two-seat, high-wing aircraft intended for utility as well as recreational flying. Its short-field capability distinguished it from the low-wing Glasair designs and gave the company a product aimed at operators seeking easier access to smaller airfields and a more practical general-purpose configuration. The Glastar broadened the brand's portfolio without abandoning its kit-aircraft foundation. Stoddard-Hamilton later became bankrupt. In 2001, Thomas W. Wathen purchased the Glasair assets from the bankrupt company. He combined New Glasair LLC and New GlaStar LLC and continued production of the Glasair and Glastar kits at the Arlington factory under the Glasair Aviation name. This transaction marked the operational end of Stoddard-Hamilton as the active corporate identity while preserving the principal aircraft families through successor ownership. The company's lasting significance lies in its early commercialization of pre-molded composite homebuilt kits and in the Glasair and Glastar designs that continued beyond the original enterprise.

  • 2001

    Glasair assets transferred to successor operation

    [1]

    Thomas W. Wathen acquired the Glasair assets from bankrupt Stoddard-Hamilton, combined New Glasair LLC with New GlaStar LLC, and continued the product lines under Glasair Aviation.

  • 1990

    Glastar introduced in the mid-1990s

    [1]

    Stoddard-Hamilton introduced the Glastar, a two-seat high-wing utility aircraft designed with short-field capability.

  • 1980

    Glasair TD introduced at EAA Oshkosh

    [1]

    The Glasair TD was introduced at the EAA Oshkosh Airshow and was presented as the first pre-molded composite aircraft kit on the general aviation market.

  • 1979

    Glasair TD development

    [1]

    The Glasair TD was developed as a pre-molded fiberglass composite aircraft kit for the general aviation and homebuilt-aircraft market.

  • Glasair performance variants expanded

    [1]

    Later Glasair models added retractable landing gear, higher-powered engines, and a turboprop-powered development.

Products and positioning

Performance-oriented homebuilt aircraft kits using composite construction, later complemented by a more utility-focused high-wing design.

  • Experimental aircraft

    SH-1 Prototype

    The SH-1 Prototype was an early aircraft associated with the Stoddard-Hamilton development program. The available reference identifies it as part of the company's aircraft range but does not provide sufficient technical or commercial detail to describe its configuration or production history further.

  • Composite homebuilt aircraft kit

    Glasair I

    Glasair I was an early member of the Glasair family, the company's low-wing, two-seat composite aircraft line. The family was supplied in kit form for amateur construction and was associated with aerodynamic efficiency and performance-oriented recreational flying.

  • Composite homebuilt aircraft kit

    Glasair II

    Glasair II was a later Glasair variant within the low-wing, side-by-side two-seat family. The reference indicates that subsequent Glasair models incorporated developments such as retractable landing gear and more powerful engines, although it does not assign each feature to a particular variant.

  • High-performance composite aircraft kit

    Glasair III

    Glasair III was the high-performance development of the Glasair family. Its associated variants included the Glasair III Turbo, which was described as capable of speeds above 300 mph. The design retained the family’s two-seat, low-wing composite configuration and was intended for technically ambitious homebuilders.

  • High-wing utility aircraft kit · 1990

    Glastar

    The Glastar was introduced in the mid-1990s as a two-seat, high-wing utility aircraft. Its short-field capability gave it a more practical mission than the faster low-wing Glasair models, broadening Stoddard-Hamilton's kit portfolio toward utility and access to smaller airfields.

  • Homebuilt aircraft

    T-9 Stalker

    The T-9 Stalker is listed among aircraft associated with Stoddard-Hamilton. The available reference does not provide enough information about its configuration, production dates, or market role to support a fuller description.

Brand decisions

  • 2001

    Transfer of Glasair assets after bankruptcyM&A

    Background

    Stoddard-Hamilton Aircraft had become bankrupt, creating a transition point for the Glasair and Glastar kit businesses.

    Action taken

    Thomas W. Wathen purchased the Glasair assets, combined New Glasair LLC with New GlaStar LLC, and continued the kits at the Arlington factory under the Glasair Aviation name.

    Aftermath

    The Glasair and Glastar product lines continued under successor ownership, while Stoddard-Hamilton ceased to be the operating brand associated with their production.

Sources1 sources

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