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
Route Development
United Airlines Opens Terminal B North Concourse at IAH
United Airlines opens a 765,000-sq-ft concourse at IAH with 22 gates, completing a $2.6B terminal overhaul.
United Airlines Holdings, Inc. (UAL) has officially opened its new 765,000-square-foot Terminal B North Concourse at George Bush Intercontinental Airport (IAH), completing the centerpiece of a $2.6 billion infrastructure overhaul.
Previewed on October 21, 2026, and opened to the public on October 22, 2026, the facility introduces 22 mainline gates and the largest United Club in the Americas. According to a company press release, the expansion increases the carrier’s peak travel date capacity in Houston by 40% compared to 2023.
Upgraded passenger facilities and mainline capacity
The new three-level concourse replaces outdated infrastructure with 22 mainline gates, all equipped with jet bridges to accommodate larger aircraft. The architectural and operational upgrades are designed to streamline passenger flow and reduce congestion during peak departure banks.
A major focal point of the development is the 54,000-square-foot United Club. With a seating capacity of 800, it is now the largest lounge operated by any airline in the Americas. The terminal also incorporates local Houston dining brands, including B&B Butchers & Restaurant, Rosie Cannonball, Pizaro’s Pizza, Blood Bros. BBQ, Katz Coffee, and Blue Bell Creameries. The public spaces feature 10 major art installations and 11 sets of restrooms.
“I want our customers to start their vacation the minute they show up at the airport and Terminal B North sets a new standard for facilities across the country,” said United Airlines CEO Scott Kirby.
Funding and execution of the Terminal B Transformation Program
The opening of the North Concourse represents the most significant milestone in the broader Terminal B Transformation Program. The original Terminal B opened in 1969, and its infrastructure had become undersized for modern mainline aircraft operations and current passenger volumes.
United Airlines and the Houston Airport System (HAS) formally announced the $2.6 billion modernization initiative on November 7, 2023. The project secured critical municipal backing on March 6, 2024, when the Houston City Council voted to allocate $150 million toward the city’s portion of the expansion under a Memorandum of Agreement.
Once subsequent improvements to the South Concourse are completed, United will operate a total of 48 gates across Terminal B.
Kirby emphasized that the airline’s strategy extends beyond fleet modernization. “Houston is great example of our focus on the overall customer experience,” Kirby stated. “Yes, we’re investing in new aircraft, products and technology here, but we’re also focused on improving the infrastructure, building new concourses, baggage systems and training and maintenance facilities for our employees.”
Strategic growth at the Houston hub
United Airlines is the largest carrier globally as measured by available seat miles, and Houston serves as one of its primary domestic and international hubs. The airline is the largest operator at IAH, managing more than 500 daily departures and employing over 14,000 people in the region.
The completion of the North Concourse builds on a sustained period of capital expenditure by the carrier in Texas. Since 2015, United has invested $3.5 billion into its facilities and operations at IAH.
The immediate operational impact of the new concourse is a 40% increase in the number of passengers the airline can accommodate on peak travel dates in 2026, alleviating previous capacity constraints at the hub and supporting future schedule growth.
Photo Credit: United Airlines
Commercial Aviation
Korean Air Smart Cargo Terminal Incheon Capacity Upgrade
Korean Air’s new Smart Cargo Terminal at Incheon raises ULD processing capacity by 67% after a 15-month automation project.
Korean Air has completed a comprehensive modernization of its cargo terminal at Incheon International Airport (ICN), increasing its hourly processing capacity by more than 60 percent to meet surging demand for high-yield technology shipments.
The carrier announced the launch of its fully integrated “Smart Cargo Terminal” on October 21, 2026, following a 15-month upgrade project that introduced automated logistics systems without disrupting daily operations. The infrastructure overhaul positions the airline to capitalize on the current air freight supercycle driven by e-commerce and artificial intelligence components.
Integrating automated logistics
The modernization project at the 100,000-square-meter Incheon facility began in June 2025 and concluded in September 2026. Central to the upgrade was the deployment of Automated Guided Vehicles (AGVs) and new Elevating Transfer Vehicles (ETVs) across the terminal floor.
To handle increased throughput, Korean Air expanded its bypass infrastructure from a single line to dual automated transfer lines integrated directly with the new ETVs. This physical expansion increases the terminal’s hourly Unit Load Device (ULD) processing capacity from 18 to 30 units and boosts total cargo handling capacity by more than 25 percent.
In a press statement, a Korean Air representative noted that the project prioritized operational precision and workplace standards.
“The automation of heavy equipment structurally minimizes manual handling touchpoints, while infrastructure upgrades improve the overall working environment,” the representative stated.
The airline also emphasized that the renovation is an essential step to proactively respond to the rapidly changing global logistics environment by upgrading equipment and integrating smart technologies.
Capitalizing on the technology freight supercycle
The completion of the Incheon Smart Cargo Terminal aligns with a period of record financial performance for Korean Air Cargo. On October 15, 2026, the carrier reported Q3 2026 cargo revenue of KRW 1.43 trillion, an increase of KRW 365.6 billion year-on-year. This growth has been heavily fueled by sustained demand for high-value shipments, particularly semiconductor components and server racks required for artificial intelligence infrastructure.
To capture this demand across its network of 116 cities in 39 countries, Korean Air is overhauling its global logistics footprint. The airline operates a fleet of 23 dedicated freighters and recently committed to long-term fleet modernization. In August 2026, the carrier placed an order for eight Boeing 777-8 freighters to replace aging aircraft and standardize its cargo operations.
The physical infrastructure upgrades are also being paired with digital modernization. In June 2026, Korean Air Cargo integrated its services with the Freightos platform, allowing freight forwarders to access real-time rates, live capacity, and direct electronic booking capabilities across key global trade lanes.
The Incheon project is part of a broader terminal modernization strategy. Korean Air is currently undertaking a major upgrade of its cargo aircraft terminal at John F. Kennedy International Airport (JFK) in New York. Partnering with automation specialist Lödige Industries, the JFK project will install fully automated ETVs and replace fixed transfer vehicles with flexible cargo pallet movers. The New York facility upgrade is targeted for completion in 2027.
AirPro News analysis
We view Korean Air’s concurrent investments in physical automation, digital booking APIs, and next-generation freighters as a cohesive strategy to protect yields in a highly competitive transpacific market. The air cargo sector is currently experiencing a structural shift toward specialized, high-value freight. Semiconductors, pharmaceuticals, and AI infrastructure require precise handling, temperature control, and rapid transit times. By automating the ground handling of heavy cargo at its primary Incheon hub and its critical New York gateway, Korean Air is mitigating the risks of labor shortages while ensuring the operational reliability demanded by premium shippers. This end-to-end modernization solidifies the carrier’s position as a dominant logistics provider capable of absorbing the ongoing technology freight supercycle.
Photo Credit: Korean Air
Aircraft Orders & Deliveries
FAA Certifies Boeing 737 MAX 10 for Commercial Service
The FAA issued the type certificate for the Boeing 737 MAX 10 on Oct. 20, 2026, completing the MAX family certification.
The Federal Aviation Administration (FAA) has officially issued the amended type certificate and updated Production Limitation Record for the Boeing 737 MAX 10, clearing the largest variant of the narrowbody family for commercial service and production.
The October 20, 2026, certification marks the conclusion of a years-long regulatory review process and completes the certification of the entire 737 MAX family. In a press release issued today, Alaska Airlines (AS) welcomed the milestone, noting the aircraft is a critical component of its long-term fleet strategy and planned premium transcontinental services.
Regulatory approval and safety enhancements
The certification of the Boeing 737 MAX 10 (737-10) follows an extensive testing and review period. According to Boeing, the certification program included approximately 1,000 test flights and 2,060 total flight test hours.
The regulatory path for the 737-10 was significantly extended following the two fatal crashes of the 737 MAX 8 in 2018 and 2019, which resulted in heightened regulatory scrutiny and new legislative requirements. The 737-10 is the first commercial airplane certified to the full extent of the 2020 Aircraft Certification, Safety, and Accountability Act (ACSAA).
To meet requirements set by the FAA and the National Transportation Safety Board (NTSB), Boeing incorporated key safety improvements into the aircraft. These include updates to the flight-control system featuring an enhanced angle of attack (AOA) sensor. This enhanced AOA system will become standard across the entire 737 MAX family.
U.S. Transportation Secretary Sean P. Duffy highlighted the rigor of the process in an official statement.
“After extensive safety reviews, including thousands of hours of test flights, the team at the FAA is ready to approve this critical aircraft for sale. This is a major win for American manufacturing and our nation’s status as a global aviation powerhouse.”
FAA Administrator Bryan Bedford confirmed that the agency will maintain strict oversight as the manufacturer transitions to the next phase. Bedford stated that the decision follows a thorough review of the design and safety requirements of the aircraft, adding that the FAA will continue to hold Boeing to the highest safety standards as production begins.
Alaska Airlines targets premium transcontinental routes
For Alaska Airlines, the certification unlocks a new phase of fleet modernization and route expansion. The Seattle-based carrier has positioned the 737-10 as the foundation for its upcoming premium transcontinental service.
During its Analyst and Investor Day on September 29, 2026, Alaska Airlines revealed its strategy to deploy the MAX 10 on high-demand, long-haul domestic routes. The airline plans to configure these aircraft with a four-cabin layout featuring 12 lie-flat suites and at least 45 percent premium seating. The carrier intends to use a minimum of 25 MAX 10 aircraft to launch this service.
Ben Minicucci, Chief Executive Officer of Alaska Air Group, emphasized the importance of the regulatory milestone for the carrier.
“The MAX 10 is an important part of Alaska’s long-term fleet strategy and our future.”
Boeing’s competitive positioning in the narrowbody market
Introduced at the 2017 Paris Air Show, the 737-10 was designed to compete directly with the Airbus A321neo in the high-capacity, long-range single-aisle segment. The aircraft features a maximum passenger seating capacity of 230 and offers an additional 365 nautical miles of range compared to competitors without auxiliary fuel tanks.
The narrowbody market remains highly competitive, with the Airbus A321neo currently holding a dominant position in the high-capacity space. The certification of the MAX 10 allows Boeing to offer a direct competitor with claimed advantages in per-seat economics.
Stephanie Pope, President and Chief Executive Officer of Boeing Commercial Airplanes, stated that completing the certification program clears the path for the manufacturer to deliver an airplane that sets a new standard in commercial aviation. Pope noted that the 737-10 offers greater capacity, longer range, and the best seat economics in its class.
The MAX 10 accounts for a significant portion of Boeing’s narrowbody backlog. The variant represents 30 percent of the current 737 MAX program order book, with 1,555 total orders from more than 30 customers globally.
The October 20, 2026, approval follows the certification of the smaller 737-7 variant in August 2026, finalizing the regulatory approvals for the four main variants of the MAX family. Boeing expects to begin delivering the 737-10 to airline customers in the coming months, with the first aircraft projected to enter commercial service in 2027.
AirPro News analysis
The certification of the 737-10 is a critical inflection point for Boeing as it seeks to stem market share losses to the Airbus A321neo. While the A321neo has established a formidable lead in the high-capacity single-aisle segment, the MAX 10 provides Boeing operators with a high-density alternative that maintains crucial fleet commonality and reduces pilot transition costs.
For carriers like Alaska Airlines, the aircraft enables a strategic shift toward premium-heavy configurations that were previously difficult to justify on smaller airframes. The ability to install 12 lie-flat suites while maintaining favorable seat economics allows domestic operators to compete more aggressively on lucrative transcontinental routes, potentially altering the competitive dynamics among major U.S. carriers.
Photo Credit: Bo
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