Commercial Aviation
Boom Supersonic Tests Symphony Engine at Colorado Facility
Boom Supersonic leverages Colorado’s aerospace infrastructure to test its SAF-compatible Symphony engine, collaborating with industry leaders for 2025 development milestones.

Boom Supersonic Chooses Colorado for Symphony Engine Testing: A Strategic Leap in Aviation
Supersonic flight is no longer just a nostalgic nod to the Concorde era, it’s fast becoming a cornerstone of next-generation aviation. Boom Supersonic, a company at the forefront of commercial supersonic travel, has taken a significant step forward by selecting the Colorado Air and Space Port (CASP) as the testing site for its Symphony engine. This move signals not only a technical milestone but also a strategic investment in sustainable, high-speed air travel.
The Symphony engine, designed specifically for Boom’s Overture airliner, represents a new paradigm in propulsion: efficient, quiet, and compatible with sustainable aviation fuel (SAF). By repurposing a former hypersonic testing facility, Boom is accelerating development while optimizing costs, an approach that reflects both innovation and pragmatism in an industry known for high barriers to entry.
Historical and Strategic Significance of the Colorado Facility
The site Boom has chosen is steeped in aerospace history. Previously used by Reaction Engines for testing the SABRE engine precooler, the facility was instrumental in achieving Mach 3.5 test conditions and managing extreme heat through rapid air cooling. Though Reaction Engines ceased operations at the site in 2024, the infrastructure remained, offering a rare opportunity for Boom to capitalize on existing high-performance test capabilities.
By adapting this legacy infrastructure, Boom avoids the significant capital expenditure of building a new test center from scratch. According to CEO Blake Scholl, this decision results in cost savings exceeding 50% compared to leasing government facilities. It also aligns with Boom’s vertically integrated development strategy, which aims to reduce external dependencies and streamline engineering workflows.
Located just 35 miles from Boom’s Denver headquarters, the facility offers logistical advantages that enhance coordination between design, testing, and manufacturing teams. As Boom prepares to scale Symphony’s development, the proximity of this site becomes a key operational asset.
“By leveraging an existing facility, we’ve created the first privately-owned supersonic test center at a fraction of the cost of government leases.” , Blake Scholl, CEO, Boom Supersonic
Economic and Regional Impact
The decision to invest up to $5 million in the Colorado site has implications beyond aviation. Lynn Baca, Chair of the Adams County Board of Commissioners, emphasized the potential for job creation and regional economic development. The project is expected to attract skilled labor and stimulate ancillary industries such as aerospace manufacturing and data analytics.
Jeff Kloska, Director of CASP, echoed this sentiment, noting that Boom’s presence helps position the spaceport as a hub for next-generation aerospace innovation. This aligns with Colorado’s broader ambitions to become a national leader in aviation and space technologies.
From a policy perspective, the partnership between Boom and CASP also showcases how public-private collaborations can accelerate technological progress while delivering tangible economic benefits to local communities.
Technical Advancements of the Symphony Engine
The Symphony engine is a medium-bypass turbofan specifically engineered for sustained supersonic performance. At takeoff, it delivers 35,000 pounds of thrust and is optimized to cruise at Mach 1.7, enabling transatlantic flights in under four hours. This performance is achieved without afterburners, a traditional source of inefficiency and noise in supersonic engines.
Measuring 12 feet in length and 4 feet in diameter, the engine’s core includes the high-pressure compressor, combustor, and turbine. This compact yet powerful configuration is designed to withstand the thermal and mechanical stresses of supersonic flight while maintaining fuel efficiency and environmental compliance.
Symphony is also engineered for compatibility with 100% sustainable aviation fuel. This feature addresses one of the key criticisms of supersonic travel, its environmental footprint, by reducing lifecycle carbon emissions and enabling cleaner operations at high altitudes.
Collaborative Engineering and Manufacturing
Boom is not working alone. The Symphony engine is a collaborative effort involving several key industry players. Florida Turbine Technologies is spearheading aerodynamic design and compressor development, while GE Aerospace (Colibrium Additive) contributes expertise in additive manufacturing for turbine components.
Final assembly will be handled by StandardAero in San Antonio, Texas. This division of labor allows Boom to leverage specialized capabilities without compromising its vertically integrated approach. Each partner brings decades of experience to the table, ensuring that Symphony benefits from cutting-edge engineering and manufacturing practices.
By integrating these partnerships into a cohesive development strategy, Boom enhances its ability to meet aggressive timelines and regulatory requirements. The result is a propulsion system that is not only technically advanced but also scalable for commercial production.
Testing Timeline and Future Developments
The Colorado facility is undergoing a comprehensive upgrade to support Symphony’s development. Investments include SAF-compatible fuel systems, advanced data acquisition platforms, and a state-of-the-art control room. These enhancements are designed to support two key phases of testing: core evaluation in late 2025 and full-engine prototyping in 2026.
During the first phase, Boom will test the high-pressure spool under simulated supersonic conditions. This will provide critical data on thermal performance, fuel efficiency, and mechanical durability. In the second phase, the complete engine, including bypass ducts and low-pressure turbines, will be integrated and tested for thrust and acoustic performance.
These tests are essential for refining the Symphony engine before it enters production. They also provide the foundation for regulatory certification and commercial deployment, which Boom aims to achieve by the end of the decade.
“This partnership advances our goal of establishing CASP as a global hub for next-generation aviation technologies.” , Jeff Kloska, Director, Colorado Air and Space Port
XB-1 Demonstrator and Overture Orders
Complementing Symphony’s development is Boom’s XB-1 demonstrator aircraft, which successfully broke the sound barrier six times in early 2025. These flights validated key aerodynamic and control systems, including force-feedback sidesticks and touchscreen cockpit interfaces.
The data from XB-1 is directly informing the design of the Overture airliner, which will carry 64–80 passengers and is slated for commercial service by 2029. With 130 orders from major carriers like United Airlines, American Airlines, and Japan Airlines, the commercial appetite for supersonic travel is clear.
These pre-orders represent approximately five years of production at Boom’s Overture Superfactory in Greensboro, North Carolina, further underscoring the market viability of the Symphony-powered aircraft.
Conclusion
Boom Supersonic’s decision to establish its Symphony engine test facility in Colorado is a calculated and forward-thinking move. It leverages existing infrastructure, fosters regional economic growth, and accelerates the development of a propulsion system poised to redefine commercial aviation. The Symphony engine, with its emphasis on speed, sustainability, and system integration, represents a new chapter in aerospace innovation.
Looking ahead, the success of this initiative will depend on rigorous testing, regulatory approvals, and continued advancements in sustainable aviation fuel. If Boom can meet these challenges, it may well usher in a new era of fast, efficient, and environmentally responsible air travel, bringing supersonic flight back to the commercial mainstream.
FAQ
What is the Symphony engine?
Symphony is a medium-bypass turbofan engine designed by Boom Supersonic for its Overture airliner. It is optimized for sustained supersonic flight and compatible with 100% sustainable aviation fuel.
Why did Boom choose the Colorado Air and Space Port?
Boom selected the site for its existing hypersonic testing infrastructure, cost efficiency, and proximity to the company’s headquarters in Denver.
When will Symphony engine testing begin?
Core testing is scheduled to begin in late 2025, with full-engine prototyping planned for 2026.
What airlines have ordered the Overture aircraft?
United Airlines, American Airlines, and Japan Airlines have placed a combined 130 orders and pre-orders for the Overture.
Sources: Aerospace Testing International, Boom Supersonic, Airframer, Aviation Pros, Travel Industry Wire
Photo Credit: BoomSupersonic
Commercial Aviation
Saudia Group Signs Financing MoU for 144 Airbus Aircraft
Saudia Group, Saudi EXIM, and Crédit Agricole CIB sign MoU to finance 144 Airbus jets due for delivery through 2032.

Saudia Group, the Saudi Export-Import Bank (Saudi EXIM), and Crédit Agricole Corporate and Investment Bank (Crédit Agricole CIB) signed a tripartite memorandum of understanding (MoU) on August 25, 2026, to arrange financing for the airline’s incoming fleet of Airbus aircraft.
The agreement, finalized on the sidelines of the French-Saudi Investment Roundtable in Paris, integrates international bank financing with Saudi national export credit instruments. According to a press release from the Saudi Press Agency, Crédit Agricole CIB will act as the financier and arranger, while Saudi EXIM will provide credit risk insurance to reduce exposure for financial institutions.
Fleet expansion and delivery timeline
The financing arrangement is designed to support Saudia Group’s substantial aircraft backlog. In May 2024, the company placed an order for 105 Airbus A320neo-family aircraft, bringing its total Airbus orderbook to 144 jets.
The May 2024 order includes 12 Airbus A320neo and 93 Airbus A321neo aircraft. Saudia Group allocated 54 of the A321neos to its mainline operations. The remaining 51 aircraft, comprising 12 A320neos and 39 A321neos, are designated for its low-cost subsidiary, flyadeal. Deliveries for the 105-aircraft order are scheduled to occur between 2026 and 2032.
Strategic financial partnerships
The tripartite structure aims to broaden the pool of potential international lenders by mitigating risk through state-backed credit insurance. This aligns with Saudi Arabia’s broader economic objectives to increase non-oil exports and enhance global connectivity.
Saudia Group Director General Eng. Ibrahim Al-Omar highlighted the strategic nature of the agreement in a public statement.
“This MoU marks an important step in developing financing solutions that support Saudia Group’s growing fleet investments, while reflecting the continued advancement of national capabilities and instruments that enable Saudi sectors to access international sources of finance. We value this partnership with Saudi EXIM and Crédit Agricole CIB, which provides us with broader financing options to support our growth and expansion plans.”
Al-Omar also noted that diversifying financing sources strengthens the group’s flexibility in executing future investments and expanding network capacity.
AirPro News analysis
We view this financing structure as a pragmatic approach to managing the massive capital requirements of Saudia Group’s fleet modernization. By layering Saudi EXIM’s credit risk insurance over Crédit Agricole CIB’s financing, the airline group effectively lowers the risk profile for international lenders. While the specific aircraft models and total financial value covered by this non-binding MoU remain undisclosed, securing a reliable financing pipeline is critical as the airline prepares to absorb over 100 new narrowbody aircraft through 2032.
Sources: Saudia Group Press Release
Photo Credit: Saudia Group
Aircraft Orders & Deliveries
Avion Express Wet-Leases A320s to TAROM and FlyOne Armenia
Avion Express deploys two A320-200s to TAROM and FlyOne Armenia for summer 2026 amid Boeing 737 MAX delivery delays.

This is original reporting and analysis by AirPro News.
ACMI (Aircraft, Crew, Maintenance, and Insurance) specialist Avion Express has expanded its summer capacity network by wet-leasing two Airbus A320-200 aircraft to FlyOne Armenia and Romanian Air Transport (TAROM). The August 18, 2026, announcement places one aircraft in Yerevan and another in Bucharest, providing critical operational relief during the peak European travel season.
The deployment highlights the ongoing reliance on wet-lease operators to bridge fleet shortfalls across the industry. In a statement released on social media, Avion Express confirmed the new partnerships, noting that the aircraft will support both airlines’ immediate capacity needs.
Bridging the gap for TAROM
For TAROM, the Avion Express Airbus A320-200 serves as a direct mitigation strategy for delayed aircraft deliveries. The Romanian carrier has faced multiple setbacks in the delivery and commercial debut of its first Boeing 737 MAX 8 aircraft.
According to scheduling data from AeroRoutes, the Boeing 737 MAX 8 was originally expected to enter service in mid-July 2026. This target was subsequently pushed to mid-August and is now revised to September 2026.
To maintain its summer schedule, TAROM has deployed the wet-leased Airbus A320-200 on key European routes out of Bucharest. The aircraft is currently scheduled to operate flights to Amsterdam, Cluj, Frankfurt, and Madrid.
Boosting single-aisle capacity in Yerevan
The second Airbus A320-200 is based in Yerevan, Armenia, to support FlyOne Armenia. The carrier has been actively expanding its fleet and network footprint.
Data from ch-aviation indicates the wet-leased aircraft is being utilized to boost single-aisle capacity during the high-demand summer months. Avion Express described the dual deployments as an opportunity to provide reliable support and adapt to fresh operational challenges.
AirPro News analysis
We observe that the ACMI market remains exceptionally tight in the summer of 2026. TAROM’s situation illustrates the cascading effects of Original Equipment Manufacturer (OEMs) delivery delays. When manufacturers miss delivery targets, airlines are forced to turn to operators like Avion Express to protect their schedules and avoid passenger disruption. This dynamic ensures that wet-lease demand will likely remain elevated as long as supply chain and production bottlenecks persist.
Sources: Avion Express
Photo Credit: Avion Express
Aircraft Orders & Deliveries
Willis Lease Finance Acquires 25 Assets for $262.9M
WLFC acquires 12 aircraft and 13 spare engines from WNG International Master Fund II for approximately $262.9 million.

Willis Lease Finance Corporation (WLFC) has expanded its aviation asset portfolio with the acquisition of 12 commercial aircraft and 13 spare engines from WNG International Master Fund II, L.P. for an adjusted purchase price of approximately $262.9 million. The transaction officially closed on August 24, 2026, following an amended Purchase and Sale Agreement originally signed in July.
Announced in a press release and detailed in a Form 8-K filed with the U.S. Securities and Exchange Commission (SEC) on August 25, 2026, the acquisition was executed through WLFC’s wholly owned subsidiary, Willis Dallas Ltd. The deal involved the purchase of the entire issued share capital of WNG II Aircraft Leasing (Cayman) Ltd. and 100 percent of the membership interests of WNG Aircraft Management 3, LLC.
Financial structure and asset allocation
The transaction featured a base purchase price of $379.3 million, which was adjusted down to approximately $262.9 million at closing. According to the SEC filing, these adjustments accounted for basic rent, maintenance reserves, cash security deposits, and assets lost or disposed of prior to the closing date. A 6.25 percent per annum interest rate was applied as an upward adjustment from the historical economic closing date through the actual closing date. The final payment was also reduced by a previously funded $10 million deposit and a $1,517,200 holdback amount.
The acquired portfolio consists of 12 commercial aircraft and 13 spare aircraft engines. WLFC stated in its regulatory filings that it intends to allocate 10 of the acquired engines and six of the aircraft to subsidiaries of joint ventures or managed investment vehicles, integrating the new assets into its existing leasing and management platform.
Strategic growth and recent corporate activity
The acquisition from WNG International Master Fund II aligns with WLFC’s stated objectives of expanding its integrated leasing, asset management, and aftermarket service capabilities. WLFC Chief Executive Officer Austin C. Willis highlighted the strategic fit of the newly acquired portfolio.
“We believe this acquisition represents an attractive opportunity to put capital to work in assets that fit well with our existing business. It builds on our core strengths in aircraft and engine leasing and reflects our continued focus on disciplined growth and long-term value creation.”
This transaction follows a series of significant corporate actions by the Coconut Creek, Florida-based lessor in the third quarter of 2026. On July 17, 2026, WLFC effected a three-for-one forward stock split designed to increase the liquidity and accessibility of its shares. Shortly after, on July 29, 2026, the company signed a five-year agreement with RTX’s Pratt & Whitney for engine storage and lease return services. WLFC subsequently reported its second-quarter financial results on August 4, 2026, posting total revenue of $388.3 million and net income of $55.2 million for the first half of the year.
AirPro News analysis
We view this acquisition as a logical extension of WLFC’s core leasing and asset management strategy. By acquiring an established portfolio and immediately planning to allocate a significant portion of the assets to joint ventures and managed vehicles, WLFC is leveraging its platform to generate management fees while expanding its physical footprint. The adjusted purchase price reflects standard industry mechanisms for transferring operational aviation assets, ensuring the buyer is compensated for rent and maintenance reserves accrued prior to the physical closing. Coupled with the recent Pratt & Whitney agreement and strong first-half financial results, this acquisition indicates a period of structured capital deployment for the lessor.
Sources: Willis Lease Finance Corporation
Photo Credit: Willis Lease Finance Corporation
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