Technology & Innovation
Pratt & Whitney Boeing 747SP Test Bed at EAA AirVenture 2025
Pratt & Whitney showcases its rare Boeing 747SP test bed at EAA AirVenture Oshkosh 2025, highlighting 100 years of engine innovation and sustainable aviation advancements.

Pratt & Whitney’s Boeing 747SP Test Bed: A Legacy of Innovation at EAA AirVenture Oshkosh 2025
In the world of aviation, few aircraft stand out as both engineering marvels and historical artifacts. The Boeing 747SP, a shortened, long-range version of the iconic jumbo jet, is one such aircraft. Even rarer is the version operated by Pratt & Whitney, modified with a fifth engine mount and used as a flying test bed for experimental propulsion systems. In 2025, this unique aircraft will be a headline attraction at EAA AirVenture Oshkosh, one of the world’s largest aviation gatherings.
Pratt & Whitney’s decision to showcase its 747SP test bed at Oshkosh aligns with its centennial celebration, marking 100 years of innovation since the company’s founding in 1925. This event offers a rare opportunity for aviation enthusiasts, engineers, and the general public to witness a piece of living history that continues to shape the future of flight.
The Boeing 747SP: A Rare Bird with a Purpose
Originally introduced in the mid-1970s, the Boeing 747SP (Special Performance) was designed for ultra-long-range flights, sacrificing passenger capacity for extended reach. Only 45 units were ever manufactured, making it one of the rarest commercial aircraft variants in the skies. Pratt & Whitney owns and operates two of the remaining airworthy models, one of which has been transformed into a state-of-the-art flying test bed.
This aircraft stands out due to its fifth engine mount, located on the left wing. This unique configuration allows engineers to test new engine designs in real-world conditions without compromising the aircraft’s primary propulsion systems. Since 2001, the test bed has contributed to the development of more than 70 experimental engines, including the PW800 and the Geared Turbofan (GTF) engine series.
With over 1,400 combined ground and flight test runs, the 747SP test bed has proven instrumental in evaluating engine performance across various weather conditions, altitudes, and operating scenarios. This real-time data is crucial for refining design, improving fuel efficiency, and reducing emissions, key goals for the aviation industry as it moves toward sustainability.
“Our Boeing 747SP test bed is a testament to our commitment to innovation and sustainability. It allows us to push the boundaries of engine technology in real-world conditions.” , Pratt & Whitney Spokesperson
Engineering Meets Heritage
Despite its advanced capabilities, the 747SP is also a symbol of aviation heritage. Its presence at AirVenture Oshkosh 2025 is more than a technical showcase, it’s a celebration of a century of aerospace milestones. According to Rick Larsen, EAA’s vice president of communities and member programs, “Bringing the 747SP to AirVenture is a fitting tribute to the company’s century of technological advancements.”
Visitors to Boeing Plaza from July 20–24, 2025, will have the rare opportunity to explore the aircraft up close. The 747SP will be on static display, and Pratt & Whitney’s team will be on hand to explain its significance and ongoing role in propulsion innovation. The event is expected to attract over 500,000 attendees, making it one of the largest public showcases of this aircraft to date.
In addition to the test bed itself, Pratt & Whitney Canada will exhibit PT6 engine cutaways and other aerospace technologies at their booth in Exhibit Hangar B. Collins Aerospace will also participate, highlighting the broader RTX family’s contributions to aviation systems and innovation.
Driving the Future of Sustainable Aviation
As the aviation industry faces mounting pressure to reduce its environmental footprint, test beds like the 747SP play a critical role in the development of next-generation propulsion systems. The Geared Turbofan engine, for instance, offers double-digit improvements in fuel efficiency and noise reduction compared to previous models. These innovations are not theoretical, they’re validated in the skies through platforms like the 747SP.
Pratt & Whitney’s test bed has also been used to evaluate engines compatible with sustainable aviation fuels (SAF), an essential component of the industry’s roadmap to net-zero carbon emissions by 2050. By simulating real-world flight conditions, the aircraft helps accelerate certification timelines and ensures that new engines meet both performance and environmental standards.
Industry analysts, including Mark Thompson of Aviation Week, note that using legacy aircraft for engine testing is both cost-effective and practical. “Pratt & Whitney’s approach reflects a balance between innovation and operational pragmatism,” Thompson commented. This blend of heritage and forward-thinking strategy is what makes the 747SP test bed so unique.
“The 747SP is a remarkable aircraft in aviation history, and its adaptation as a flying test bed underscores the ingenuity of aerospace engineering.” , Dr. Jane Williams, Aviation Historian
A Centennial of Innovation
Founded in 1925, Pratt & Whitney has been a cornerstone of aerospace advancement for a century. From the legendary Wasp radial engines of the early 20th century to today’s high-bypass turbofans, the company’s legacy is built on pushing the boundaries of what’s possible in flight.
Pratt & Whitney Canada, established in 1928, is particularly renowned for the PT6 engine, a turboprop powerhouse that has logged over 500 million flight hours and is used in a wide range of aircraft from bush planes to business jets. The PT6 will also be featured at AirVenture 2025, reinforcing the company’s long-standing commitment to general aviation.
Maria Della Posta, president of Pratt & Whitney Canada, emphasized the significance of the event: “Showcasing the 747SP at Oshkosh not only honors our legacy, it demonstrates how our commitment to innovation continues to shape the future of aviation.”
Conclusion
Pratt & Whitney’s Boeing 747SP test bed is more than an engineering platform, it’s a symbol of continuity between aviation’s storied past and its sustainable future. Its appearance at EAA AirVenture Oshkosh 2025 offers a unique glimpse into the rigorous testing and bold innovation that define modern aerospace development.
As the industry strives toward cleaner, quieter, and more efficient flight, platforms like the 747SP will continue to play a pivotal role. For aviation fans, engineers, and industry stakeholders alike, this aircraft represents not only what has been achieved in the last 100 years, but what lies ahead in the next century of flight.
FAQ
What is the Boeing 747SP test bed used for?
The aircraft is used by Pratt & Whitney to test and validate new engine technologies under real-world flight conditions.
Why is the 747SP significant?
Only 45 were ever built, and it is one of the few remaining airworthy examples. Its test bed configuration makes it unique in the world.
When and where can I see the aircraft?
The 747SP will be on display at EAA AirVenture Oshkosh 2025 from July 20–24 at Boeing Plaza, Wittman Regional Airport, Wisconsin.
Sources: The North Western, Wikipedia, Pratt & Whitney, EAA AirVenture Oshkosh
Photo Credit: Oshkosh Northwestern
Technology & Innovation
Signature Aviation and UrbanV Launch US AAM Joint Venture
Signature Aviation and UrbanV launch SUVA, a joint venture to build a nationwide eVTOL infrastructure network across the US.

Signature Aviation and Italian vertiport operator UrbanV have formally launched a joint venture to develop and operate a nationwide Advanced Air Mobility (AAM) infrastructure network across the United States.
Announced on October 21, 2026, during the NBAA-BACE convention, the Signature UrbanV Alliance (SUVA) aims to transition electric vertical takeoff and landing (eVTOL) operations from isolated test sites to a scalable, agnostic network. According to a press release issued by Signature Aviation, the partnership will initially integrate electric aircraft operations into the company’s existing terminal footprint before expanding to purpose-built facilities.
Transitioning from test sites to scalable networks
The SUVA joint venture, first proposed in an initial agreement on June 12, 2025, is designed to provide an agnostic infrastructure platform. Rather than catering to a single aircraft manufacturer, the network will support multiple eVTOL and electric conventional takeoff and landing (eCTOL) operators.
The alliance plans a phased rollout. Initial operations will focus on integrating charging systems, aircraft handling, and passenger services into existing Signature Aviation facilities. As commercial demand scales, SUVA intends to construct dedicated, purpose-built vertiports in urban and regional destinations to create a connected on-airport and off-airport network.
“Advanced Air Mobility will not be enabled by individual sites alone. It will require connected infrastructure that is ready ahead of large-scale commercial operations and links airports with the places people want to reach. SUVA enables us to turn that vision into a scalable network, combining existing aviation assets with dedicated vertiports as the market develops.”
The statement was provided by Massimiliano Pane, Executive Director of UrbanV.
Leveraging existing aviation real estate
The joint venture combines UrbanV’s dedicated vertiport development experience with Signature Aviation’s extensive fixed-base operator (FBO) footprint. Signature operates the world’s largest network of Private jets terminals, with over 200 locations globally. The multinational aviation services company, headquartered in Orlando, Florida, was taken private in June 2021 following a $4.7 billion acquisition by a consortium that included Blackstone, Global Infrastructure Partners, and Cascade Investment.
UrbanV, headquartered in Rome, Italy, was established by European airport operators Aeroporti di Roma, SAVE Group, Aeroporto di Bologna, and Aéroports de la Côte d’Azur. The company currently operates the UV-0 test vertiport at Rome Fiumicino Airport (FCO), which hosted Italy’s first crewed eVTOL public test flight in October 2022.
Derek DeCross, Chief Commercial Officer at Signature Aviation, noted that the alliance allows the company to shape both the physical infrastructure and the passenger experience for the AAM sector.
“Through the Signature UrbanV Alliance, we have an opportunity to help shape not only the infrastructure behind Advanced Air Mobility, but the guest experience itself, leveraging our network, operational expertise and commitment to hospitality to create a more connected, convenient and elevated journey for travelers.”
Regulatory alignment and market context
The formal launch of SUVA aligns with advancing regulatory frameworks for AAM infrastructure in the United States. On October 22, 2026, the Federal Aviation Administration (FAA) released updated draft design standards for vertical lift infrastructure. The FAA documentation addresses core layout requirements, lighting, charging systems, and the integration of vertiports at existing airports.
SUVA will collaborate with airports, municipalities, real estate owners, and regulatory bodies to establish the technical and commercial frameworks required for widespread electric aircraft deployment.
AirPro News analysis
The Advanced Air Mobility sector has long faced a structural challenge regarding the simultaneous development of certified aircraft and the infrastructure required to operate them. By utilizing Signature Aviation’s existing real estate portfolio, SUVA bypasses the immediate need for complex greenfield vertiport construction in dense urban areas. This strategy offers a pragmatic bridge to early commercial eVTOL operations. The timing of the launch also positions the joint venture to directly apply the FAA’s newly updated draft design standards, ensuring that initial retrofits at existing FBOs align with the agency’s evolving regulatory expectations.
Photo Credit: Signature Aviation
Technology & Innovation
FAA Grants First eVTOL Market Survey Certificate to BETA Technologies
BETA Technologies receives the first FAA market survey authorization for an eVTOL aircraft, the ALIA A250, ahead of full type certification.

The Federal Aviation Administration (FAA) has granted BETA Technologies a Special Airworthiness Certificate for market surveys for its ALIA VTOL (A250) aircraft, marking the first time an electric vertical takeoff and landing (eVTOL) aircraft has received this specific authorization.
Announced in a company press release on October 21, 2026, the certification allows BETA to conduct flight operations with prospective customers, operators, and stakeholders. The authorization expands the geographic scope of the manufacturer’s operations and represents a regulatory milestone toward full type certification and commercial adoption in the Advanced Air Mobility (AAM) sector.
Inaugural flight and operational scope
On October 20, 2026, BETA conducted the first flight under the new authorization. The A250 aircraft departed from Plattsburgh International Airport (PBG) in New York and landed at Patrick Leahy Burlington International Airport (BTV) in Vermont. The flight covered a distance of 34 nautical miles and lasted 20 minutes.
Kyle Clark, Founder and Chief Executive Officer of BETA Technologies, stated that the authorization brings vertical flight closer to practical application and builds on the company’s previous testing milestones.
“Operators can now experience the VTOL firsthand and begin planning how it fits into their businesses, from connecting communities to moving people and goods at a lower cost,” Clark said. “This is an important step toward commercial adoption, and we’re grateful to the FAA for developing the regulatory framework that makes these operations possible.”
U.S. Transportation Secretary Sean P. Duffy called the certification a critical step toward enabling the future of flight in the United States. FAA Administrator Bryan Bedford emphasized the agency’s commitment to integrating new aircraft into the national airspace while maintaining rigorous safety standards.
Aircraft specifications and testing history
The ALIA VTOL (A250) is an all-electric aircraft featuring dual pilot controls. It is designed to accommodate up to five passengers and carry a minimum of 1,200 pounds of cargo. The A250 shares a common architecture, flight control computers, batteries, and propulsion systems with BETA’s conventional takeoff and landing aircraft, the ALIA CTOL (CX300).
BETA previously secured a similar market survey authorization for the CX300. Combined, the manufacturer’s CTOL and VTOL platforms have accumulated more than 250,000 nautical miles of flight time. The company completed the first crewed electric VTOL transition flight in 2024.
Expanding integration and emergency response testing
The market survey authorization follows a series of operational demonstrations by BETA Technologies. On October 7, 2026, the company completed operations in the Utah eVTOL Integration Pilot Program (eIPP), focusing on radiopharmaceutical delivery and treatment support.
Prior to that, on September 24, 2026, BETA partnered with Metro Aviation and Washington County EMS to fly an electric aircraft in an emergency response demonstration in Texas. The FAA and the U.S. Department of Transportation have selected BETA to participate in seven of the eight eIPP programs alongside government and operator partners. According to the company, this represents the highest participation rate of any original equipment manufacturer (OEM) in the initiative.
Regulatory pathway and market context
The FAA issued the Special Airworthiness Certificate for market surveys under Part 21 of its regulations. This framework allows manufacturers to demonstrate aircraft capabilities to potential buyers and operators before achieving full type certification.
BETA Technologies (NYSE: BETA), headquartered in South Burlington, Vermont, designs and manufactures electric aircraft alongside advanced electric propulsion and charging systems. The company is currently working toward full FAA type certification and commercial operations for the A250. The ability to conduct customer demonstration flights is intended to accelerate market adoption within the broader AAM industry.
AirPro News analysis
The FAA’s decision to grant a market survey authorization for an eVTOL aircraft marks a distinct shift in the regulatory treatment of Advanced Air Mobility platforms. Until now, eVTOL manufacturers have largely been restricted to experimental research and development flights, limiting prospective operators to simulators or ground-based evaluations. By allowing BETA to fly the A250 with actual stakeholders, the FAA is signaling increased confidence in the safety and maturity of the aircraft’s design.
We view this as a critical commercial catalyst. The ability to demonstrate real-world payload, noise profiles, and operational economics in flight will likely accelerate firm orders and infrastructure planning among early AAM adopters, setting a precedent that other eVTOL developers will undoubtedly seek to follow as they mature their own flight test programs.
Photo Credit: BETA Technologies
Technology & Innovation
Reliable Robotics Raises $115M, Valuation Tops $1 Billion
Reliable Robotics extends its Series D to $275M and crosses a $1B valuation as FAA certification work advances.

Reliable Robotics has secured $115 million in new capital, pushing the autonomous aviation startup’s valuation past the $1 billion mark and accelerating its push toward Federal Aviation Administration certification.
The Mountain View, California-based company announced the funding extension on October 20, 2026, in a press release. The capital injection upsizes its Series D round to $275 million and will fund the expansion of its aircraft fleet and production capacity for its Reliable Autonomy System.
Funding structure and strategic expansion
The new funding consists of $90 million in equity and a $25 million term loan provided by Silicon Valley Bank. This extension follows the initial $160 million Series D round announced on April 21, 2026. The latest injection brings the company’s total equity capital raised to date to more than $380 million.
A broad coalition of investors participated in the round, including Nimble Partners, Gideon Capital, RockCreek, Geek Ventures, Gold Hill Capital, Sparkwave Capital, Island Green Partners, and Allen & Company.
The company will use the funds to scale its operations and expand its physical footprint. Reliable Robotics is opening a new engineering hub in Bothell, Washington, which will serve as a center of excellence for its radar program by tapping into the established aerospace talent pool in the Seattle area. The company is also expanding with a new office in San Diego, California, supporting a workforce that now exceeds 250 employees.
Crossing $1 billion in valuation is a significant milestone in Reliable’s mission to deliver certified autonomous flight systems that make aviation safer and more accessible.
Certification timeline and technology
Reliable Robotics is actively submitting evidence to the FAA for the certification of its continuous autopilot engagement system. The technology is designed to manage engine startup, taxiing, takeoff, and landing while a pilot remains onboard the aircraft. The company expects to achieve FAA certification for this system within 18 to 24 months.
Robert Rose, co-founder and chief executive officer of Reliable Robotics, noted that the company continues to make steady progress and deliver evidence to the FAA, moving closer to certification with each submission.
The company is also developing its solid-state collision-avoidance technology, known as Reliable Radar. Certification for the radar system is expected by the end of 2027. These systems are engineered to prevent the leading causes of aviation accidents, specifically loss of control (LOC) and controlled flight into terrain (CFIT).
A secondary certification phase, which would remove the pilot from the cockpit entirely to enable fully remote operations, is projected to take at least three years.
Retrofitting the existing cargo fleet
Founded in 2017 by former SpaceX and Tesla engineers Robert Rose and Juerg Frefel, Reliable Robotics has adopted a distinct strategy within the autonomous flight sector. Rather than designing and manufacturing clean-sheet aircraft, the company focuses on certifying autonomous systems for integration into existing, proven airframes.
The initial target for commercial certification is the Cessna 208B Grand Caravan, a widely used turboprop in the regional Cargo aircraft market. By retrofitting certified aircraft, Reliable Robotics aims to integrate its technology into the existing National Airspace System without requiring new infrastructure or entirely new regulatory frameworks.
This approach has generated significant market interest. The company has secured over 200 commitments from commercial and military customers. In the defense and government sectors, Reliable Robotics holds a $17.4 million contract with the United States Air Forces and participates in National Aeronautics and Space Administration (NASA) Small Business Innovation Research (SBIR) Phase III agreements.
AirPro News analysis
We view the equity-plus-debt structure of this Series D extension as a calculated move by Reliable Robotics to secure necessary runway while minimizing ownership dilution. The autonomous aviation sector is highly capital-intensive, and reaching the certification finish line often requires more funding than initial projections suggest. By securing a $25 million term loan alongside the $90 million in equity, the founders are protecting their cap table while ensuring they have the resources to complete the rigorous FAA certification process.
Furthermore, the company’s strategy of retrofitting the Cessna 208B Grand Caravan provides a clearer path to revenue than competitors attempting to certify entirely new aircraft designs. By focusing on the autonomy system rather than the airframe, Reliable Robotics bypasses the aerodynamic and structural certification hurdles that clean-sheet manufacturers face. The military contracts and NASA agreements also provide non-dilutive capital and operational validation, which likely contributed to the company’s ability to achieve a valuation over $1 billion in a challenging venture capital environment.
Photo Credit: Reliable Robotics
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