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MOSAIC, a New Beginning for American Aviation

MOSAIC (Modernization of Special Airworthiness Certification) is an iniciative that aims to adapt the regulations of the LSA category to pilots and professionals. This new reforms have been in development through the collaboration between the most important American Associations, the EAA (Experimental Aircraft Association), GAMA (General Aviation Manufacturers Association) and AOPA (Aircraft Owners and Pilots Association). Together, they’ve been working with the authorities at the FAA (Federal Aviation Administration) to provide legal ground in order to relax the operational limitations of this type of aircrafts and to even allow some comercial operations limited to certified ones.


This new environment will divide the light aviation spectrum into three categories:

  • FAR 103: This aircraft category includes mainly tube and fabric aircraft, with very low weight, and typically single-seaters. They are extremely simple, lightweight aircraft that don’t even require a license for operation.
  • LSA: The same category as of nowadays but “on steroids”. Among the main proposed changes is the elimination of the current limitation on maximum weight, based on parameters related to stall speed, which will be 54 knots with the aircraft clean or with fixed or automatic high-lift devices (instead of the previous 45 knots). This will allow for larger aircraft (around 3,000 lbs maximum weight, approximately 1,350 kg), enabling increased safety margins, durability, and comfort for new aircraft certified under this new standard.
  • Legacy: In this category older aircraft like the legendary Cessna 152 and 172 will be included so an LSA pilot could also be at the controls.

Sport pilots would still be limited to taking no more than one passenger at a time even if the airplane has more seats than that like the Cessna 172.

This changes will allow Flight Schools to offer much heavier and reliable airplanes like the Piper PA-28 to be part of their training program.

Another important change is the elimination of the restriction that LSAs must have a traditional fuel engine, which will allow for future developments in electric, hybrid, turboprop, etc. Furthermore, the category will be expanded to include helicopters or electric propulsion vertical take-off and landing (VTOL) aircraft. The certification “rules” will be based on the international ASTM standard, which greatly facilitates the certification of new aircraft worldwide, as the standard is international.

Pipistrel training model Alpha Electro could be purchased in the USA under MOSAIC

This new paradigm, will enable manufacturers to introduce in the American market high performance aircraft developed in Europe that will exceed speeds never seen before in the LSA space.

The prior work between the FAA and major associations in MOSAIC has resulted in the standard already being “well-polished”. A good example of previous collaboration in drafting new regulations among the associations.

In summary, MOSAIC presents a bright future ahead. The American new regulations will have a massive impact worldwide and surely more agencies around the globe will follow suit the United States example. If MOSAIC succeeds, pilots will have a great foundation to keep learning and enjoy aviation in a way that fits the modern times we live in.

100 Years in the Making: History of Ultralight Aviation

Ultralight aircraft, with their nimble frames and adventurous spirit, have carved a unique niche in aviation history. These marvels of engineering embody the essence of freedom and exploration, offering enthusiasts an unparalleled connection with the skies.

As we delve into the evolution of ultralights, it’s crucial to appreciate the strides made in transforming these flying machines from challenging endeavors to the accessible wonders we know today. Let’s dive in the history of how a few, changed aviation as we know it forever.

1920s-1930s: The Pioneering Decades

In the 1920s and 1930s, aviation pioneers were experimenting with various aircraft designs. While ultralights, as we know them today, did not exist, this period laid the foundation for innovation. The ERCO Ercoupe, designed by Fred Weick in the late 1930s, featured a fully enclosed cabin and tricycle landing gear—a departure from the open-cockpit designs of the time. Although not classified as an ultralight, it set a precedent for unconventional aircraft configurations.

Additionally, notable developments during this period include the Klemm KL 105, a German light sports aircraft, which showcased advancements in lightweight construction and design principles.

1940s: Turbulent Times and Technological Progress

The 1940s were marked by the challenges of World War II, diverting attention away from civilian aviation. However, surplus military aircraft became available post-war, influencing the private flying sector. The Taylorcraft Model A, introduced in the late 1930s, was one such aircraft, known for its versatility and adaptability. This era set the stage for the post-war surge in recreational flying.

Further, the post-war surplus saw the emergence of iconic aircraft like the Piper J-3 Cub, repurposed for civilian use, becoming a symbol of accessible and affordable flying.


1950s-1960s: The Rise of Homebuilt Aircraft

The 1950s and 1960s witnessed a surge in interest in homebuilt aircraft. Inspired by a desire for cost-effective flying, aviation enthusiasts explored innovative models like the Aeronca Champ and Culver Cadet. These aircraft, while not technically ultralights, were variants of earlier models and represented a shift towards smaller, more accessible planes.

The Aeronca Champ, a notable aircraft of this period, was a variant of the pre-World War II Aeronca Chief, which had its first flight in the 1930s.

Similarly, the Culver Cadet, though originally designed in the 1940s, gained popularity as a homebuilt aircraft in the 1950s and 1960s.

1970s: Birth of the Ultralight Movement 

The 1970s marked the birth of the ultralight movement, fueled by regulatory changes and a growing desire for affordable aviation. The Weedhopper, a simple and lightweight design by John Chotia, became a symbol of this movement. Its affordability and ease of assembly attracted a new wave of aviation enthusiasts, democratizing the joy of flight.

During this era, the introduction of hang glider wings to powered ultralights brought a new dimension to the flying experience, giving pilots greater control and maneuverability.


1980s: Regulatory Changes and the Quicksilver Revolution 

Regulatory changes in the 1980s officially recognized ultralights as a distinct category. The Quicksilver MX, featuring a tube-and-fabric construction, became a hallmark of this era. Its affordability and ease of handling made it a popular choice for beginners.

The Pterodactyl Ascender, developed between 1979 and 1984, with its high-wing design and innovative materials, played a significant role in this period, showcasing advancements in ultralight technology. The 1980s also saw the emergence of the Rans S-4 Coyote, a kit-built ultralight known for its versatility and reliability.


1990s: Technological Advancements and Record-Breakers

The 1990s witnessed continued technological advancements in ultralight design. The Quicksilver GT 400, first introduced in 1993, became a notable model of this era. It set speed records, emphasizing that ultralights were not just about simplicity but could also achieve remarkable performance. Its speed record highlighted the potential for these lightweight aircraft to compete with conventional planes in certain aspects.

Moreover, the 1990s saw the advent of more sophisticated ultralights like the Flightstar series, incorporating advanced avionics and materials for enhanced safety and performance.

2000s: Composite and Electric Innovations 

The 2000s saw a surge in experimentation with electric propulsion systems within the ultralight community. Innovations in composite materials led to the development of lightweight yet robust aircraft. The Pipistrel Virus, a composite ultralight, not only showcased advanced materials but also marked a shift towards more sustainable aviation practices. This decade laid the groundwork for a future where environmental considerations would play a significant role in aircraft design.

Additionally, advancements in aerodynamics, such as the use of laminar flow airfoils, contributed to improved efficiency and performance in ultralight designs during the 2000s.

2010s Technological Advancements and Safety Innovations:

In the 2010s, the landscape of ultralight aviation witnessed remarkable advancements, marking a significant evolution in the design and safety features of these lightweight aircraft. The ICON A5 (despite having the LSA certification) was designed with a focus on ultralights. This plane became a symbol of this transformative era. Its sleek aesthetics and advanced safety features exemplified the growing sophistication of ultralight aircraft.

During this period, there was a notable progression in avionics and technology, enhancing the user-friendliness of ultralights and expanding their appeal to a wider range of pilots. These technological innovations contributed to making ultralights more accessible and attractive as flying machines.

Moreover, the 2010s saw a pivotal development with the integration of ballistic parachute systems into ultralight designs. This safety enhancement played a crucial role in furthering the protection of both pilots and passengers, underlining the commitment to safety within the ultralight aviation community.

2020s: Sustainable Aviation and Autonomous Flight

The current decade is characterized by a strong emphasis on sustainability and autonomous capabilities. Electric and hybrid propulsion systems are gaining traction, promising cleaner and quieter flight. The Pipistrel Alpha Electro, an electric ultralight, exemplifies the industry’s commitment to environmentally friendly aviation. Moreover, experiments with autonomous flight, coupled with advancements in eVTOL concepts, are pushing the boundaries of personal flight, showcasing an industry at the forefront of innovation and technological exploration. The 2020s represent a culmination of a rich history and a leap into a future where ultralight aircraft continue to evolve in response to changing technological landscapes and societal needs.

Conclusion: A Boundless Horizon Beckons

As we reflect on the rich tapestry of ultralight aviation history, it’s evident that each decade has woven a unique thread into the narrative of innovation and exploration. From the pioneering spirit of the 1920s to the sustainability drive of the 2020s, ultralights have transcended boundaries, making the skies more accessible and thrilling.

The collaborative efforts of passionate aviators, coupled with advancements in materials, technology, and regulation, have propelled ultralights from humble beginnings to the forefront of personal flight. The future holds the promise of even greater heights—where sustainable practices, autonomous capabilities, and continuous innovation will shape the next chapters in the remarkable story of ultralight aviation.

As we stand on the cusp of a new era, the horizon remains boundless, inviting dreamers and visionaries to join hands in shaping the destiny of ultralight flight. May the wings of these light and nimble aircraft continue to carry the spirit of freedom and adventure into the vast expanse of the skies, inspiring generations to come. The journey has been extraordinary, and the best is yet to unfold in the ever-expanding realm of ultralight aviation.

Introduction to Ultralight Aircraft (ULM): Features, Use Cases and Regulations.

Ultralight aircraft, known as ULM (Ultra Léger Motorisé) in Europe, are small, lightweight aircraft designed for recreational flying. These aircraft are subject to specific regulations in different European countries, and the term “ULM” is commonly used in French-speaking regions. Here’s a general overview of ultralight aircraft features and their common use cases:

Main Features of Ultralight Aircraft (ULM)

Weight and Size

  • Ultralights are characterized by their low weight, typically not exceeding a certain limit set by aviation authorities. In Europe, this weight limit is often around 450/600kg for two-seat ultralights.

Engine Type

  • Ultralights are powered by small engines, commonly two-stroke or four-stroke, depending on the design. The engine power is generally modest, suitable for the light structure of the aircraft.

Simplicity of Design

  • Ultralight aircraft are designed with simplicity in mind, both in terms of structure and operation. They often have a fixed-wing design, tricycle landing gear, and minimal avionics.

Open Cockpit

  • Many ultralights have an open cockpit design, providing a more immersive flying experience. However, enclosed cockpits are also found in some models.

Slow Flight Speed

  • Ultralights typically have lower cruising speeds compared to traditional aircraft. This allows for more leisurely flights and makes them suitable for sightseeing.

Short Takeoff and Landing (STOL)

  • Many ultralights are designed for short takeoff and landing distances, enabling operation from smaller airfields and grass strips.

Foldable Wings

  • Some ultralights feature foldable wings, facilitating storage and transportation.

Best Use Cases

Recreational Flying

  • Ultralight aircraft are primarily used for recreational flying and leisure activities. They provide an accessible and affordable entry point into aviation.


  • Ultralights are often used for basic flight training due to their simplicity and ease of operation. Training schools may offer ultralight pilot courses.

Sightseeing and Tourism

  • The open cockpit design and slower speeds make ultralights suitable for sightseeing and tourism, allowing passengers to enjoy scenic flights.

Aerial Photography

  • Due to their slow speeds and maneuverability, ultralights are sometimes used for aerial photography and surveying.

Sport Aviation

  • Ultralights contribute to the vibrant community of sport aviation, with enthusiasts participating in events and airshows.

Short-Distance Travel

  • While not designed for long-distance travel, some ultralights may be used for short-distance flights, especially in regions with suitable airfields.

Important Considerations


  • Adherence to national aviation regulations is crucial. Ultralight pilots should be aware of the specific rules and requirements in their country.


  • Proper training is essential for safe ultralight flying. Pilots should undergo training programs provided by certified instructors.


  • Regular maintenance is crucial to ensure the safety and reliability of ultralight aircraft. Owners should follow manufacturer guidelines and regulatory requirements.

Important note

As regulations and classifications may vary between European countries, individuals interested in flying ultralight aircraft in Europe should consult with their national aviation authority for specific guidelines and requirements.