Development and Design Philosophy
Garry LeGare conceived the Sea Hawker in 1982 as part of the emerging homebuilt aircraft movement that was gaining momentum throughout North America. LeGare's design philosophy centered on creating an amphibious aircraft that amateur builders could construct from plans and kits, making seaplane flying accessible to recreational pilots who previously had limited options for amphibious aircraft ownership.
The Sea Hawker employed composite construction techniques that were becoming popular in experimental aviation circles during the early 1980s. This approach allowed for lighter weight while maintaining structural integrity necessary for water operations, where aircraft face additional stresses from wave action and water landings.
Technical Specifications and Performance
The first prototype took to the skies on July 10, 1982, equipped with a 54-kilowatt Revmaster engine producing 72 horsepower. This powerplant, popular among homebuilders for its reliability and relatively simple installation, provided adequate performance for the lightweight amphibian's intended recreational role.
Recognizing the need for improved performance, LeGare developed a second prototype fitted with a more powerful 75-kilowatt Avco engine generating 100 horsepower. This 28-horsepower increase represented a significant boost in available power, improving takeoff performance from water surfaces where amphibians typically require more power than their land-based counterparts.
The biplane configuration offered several advantages for an amphibian design. The dual wing setup provided excellent low-speed handling characteristics crucial for water operations, while the additional wing area allowed for shorter takeoff distances on both land and water. The composite construction enabled LeGare to optimize the hull shape for water handling without the weight penalties associated with traditional aluminum construction.
Production and Market Reception
Aero Gare marketed the Sea Hawker through kit sales rather than completed aircraft, following the successful model established by other homebuilt manufacturers of the era. This approach kept costs manageable for amateur builders while allowing LeGare's small company to avoid the substantial certification costs and regulatory requirements associated with type-certified aircraft production.
The kit approach proved particularly suitable for the specialized amphibian market, where buyers typically possessed above-average mechanical skills and welcomed the opportunity to customize their aircraft during construction. Kit builders could tailor engine installations, avionics packages, and interior configurations to match their specific operational requirements and budgets.
International Operations
Despite its Canadian origins, the Sea Hawker found operational homes internationally, with documented examples operating in New Zealand's challenging coastal and lake environments. New Zealand's geography, with its extensive coastline and numerous inland waterways, provided an ideal operational environment for small amphibians like the Sea Hawker.
The aircraft's presence in New Zealand demonstrated its capability to handle diverse water conditions, from sheltered harbors to more challenging coastal operations. The country's active experimental aviation community embraced the Sea Hawker's combination of traditional biplane aesthetics with modern composite construction techniques.
Evolution and Legacy
The Sea Hawker's most significant legacy emerged through its evolutionary development into the Quikkit Glass Goose. In October 1984, Tom Scott acquired a Sea Hawker kit and completed construction by March 1986. However, Scott's operational experience revealed performance and stability shortcomings that required addressing.
Scott dedicated five years to systematically improving the basic Sea Hawker design, focusing on wing area optimization, hull surface refinements, and pylon aerodynamic improvements. These modifications addressed the original aircraft's handling characteristics while maintaining its fundamental appeal as a homebuilt amphibian.
The transformation into the Glass Goose represented a natural evolution of LeGare's original concept, demonstrating how homebuilt aircraft designs can mature through user feedback and continuous development. This iterative improvement process, common in experimental aviation, allowed the basic Sea Hawker design to achieve its full potential.
Recognition and Documentation
The Sea Hawker achieved formal recognition within international aviation through its assignment of ICAO designation AGSH, acknowledging its place in the global aircraft registry despite limited production numbers. This recognition reflected the aircraft's legitimate status as a distinct type rather than merely a one-off experimental design.
The assignment of an ICAO code indicated that sufficient examples existed to warrant formal documentation, suggesting broader distribution than might be apparent from limited historical records. Such designations typically require multiple aircraft examples and operational history to justify administrative processing.
Current Status
While comprehensive production records remain unavailable, the Sea Hawker represents an important chapter in 1980s homebuilt aviation development. The aircraft demonstrated that small manufacturers could successfully develop specialized designs for niche markets, particularly in the amphibian category where limited commercial options existed.
The Sea Hawker's influence extends beyond its direct production numbers through its role in advancing composite construction techniques and inspiring subsequent amphibian designs. Its development paralleled similar efforts by other manufacturers to democratize amphibian ownership through kit aircraft availability.