Technology & Innovation
Vertical Aerospace Achieves Two-Way Transition Flight Milestone for Valo eVTOL
Vertical Aerospace completed a two-way piloted transition flight for the Valo eVTOL, advancing toward certification in 2028 under UK CAA oversight.
This article is based on an official press release from Vertical Aerospace.
Vertical Aerospace has achieved a major milestone in the electric vertical takeoff and landing (eVTOL) sector. According to a company press release, on April 14, 2026, Vertical became the second company worldwide to successfully execute a two-way piloted transition flight using a full-scale tiltrotor eVTOL aircraft.
The flight, piloted by Chief Test Pilot Simon Davies, involved a vertical takeoff, a transition into wingborne cruise flight, and a return to a vertical landing, all completed in a single, continuous operation. This achievement follows the company’s thrustborne transition flight conducted earlier in the month on April 2, 2026.
Notably, Vertical Aerospace claims to be the first manufacturer to accomplish this feat under the regulatory oversight of a civil aviation Design Organisation Approval. This milestone validates the core technology required for their upcoming commercial aircraft, the Valo, to operate efficiently in urban environments.
The Significance of Transition Flight
Transitioning from vertical lift to forward wingborne flight is widely considered the defining capability, and one of the most complex engineering challenges, of eVTOL aviation. By successfully demonstrating this capability, Vertical Aerospace has proven the aerodynamic and mechanical viability of the Valo aircraft.
Unlocking Urban Air Mobility
The company’s press release highlights that this technology is what makes electric air taxis a practical reality. The Valo is designed to take off from city-center vertiports or rooftops, cruise at high speeds like a traditional airplane, and land vertically at its destination without the need for a runway.
Vertical Aerospace notes that this capability will unlock commercially viable, real-world routes. Proposed operational corridors include flights from Canary Wharf to Heathrow Airport in London, or from JFK International Airport to Manhattan in New York.
“This is now the most significant technical milestone in our history. Full piloted transition is the most critical and complex challenge in eVTOL development, and we’ve achieved it under more rigorous regulatory oversight than anyone in the category. We’re not just participating in this industry, we are helping to define it. Our focus now is on executing our roadmap and bringing certified electric flight into commercial service.”
Regulatory Oversight and the Path to Certification
A key differentiator for Vertical Aerospace’s recent flight test is the level of regulatory scrutiny involved. The company stated that all of its flight tests since 2023 have been conducted under the direct oversight of the UK Civil Aviation Authority (CAA).
The CAA is working in close collaboration with the European Union Aviation Safety Agency (EASA) to guide the Valo toward Type Certification. The recent transition flight was executed under Vertical’s Design Organisation Approval, which is a mandatory prerequisite for an aircraft’s entry into commercial service.
Next Steps for the Valo Aircraft
With vertical takeoff, wingborne flight, and the transition between the two now proven, Vertical Aerospace is advancing to the next phase of certification testing. According to the official release, the immediate next step is a critical design review, which will finalize and lock the aircraft’s design.
Following the design lock, the company plans to manufacture seven pre-production Valo aircraft in the United Kingdom. These units will be dedicated to rigorous compliance and verification testing alongside the CAA and EASA. Vertical Aerospace is currently targeting certification for the Valo in 2028, with commercial entry into service expected shortly thereafter.
AirPro News analysis
We view this successful two-way transition flight as a critical de-risking event for Vertical Aerospace. The eVTOL industry has seen numerous concepts, but full-scale, piloted transition flights remain a rare and highly technical achievement. By completing this under CAA oversight, Vertical not only proves its engineering capabilities but also demonstrates a maturing relationship with aviation regulators.
The timeline targeting certification in 2028 remains ambitious but aligns with the broader industry push toward late-decade commercialization. The upcoming critical design review and the production of seven test articles will be capital-intensive phases, requiring sustained execution and regulatory alignment over the next two years.
Frequently Asked Questions
What is a two-way transition flight?
A two-way transition flight occurs when an eVTOL aircraft takes off vertically, transitions its propulsion system to fly forward on its wings like a traditional airplane, and then transitions back to a hover to land vertically.
When did Vertical Aerospace complete this flight?
The piloted two-way transition flight was completed on April 14, 2026.
When is the Valo expected to be certified for commercial use?
Vertical Aerospace is targeting certification for the Valo aircraft in 2028, with entry into commercial service expected shortly after.
Sources
Photo Credit: Vertical Aerospace
Sustainable Aviation
ZeroAvia Leads HyPRIME Liquid Hydrogen Refuelling Project
ZeroAvia leads Project HyPRIME, backed by over £2 million in UK funding to test mobile LH2 refuelling at commercial airports.
ZeroAvia is leading a newly formed consortium to develop and test a mobile liquid hydrogen (LH2) refuelling vehicle at commercial airports in the United Kingdom, backed by over £2 million in government funding.
The initiative, known as Project HyPRIME (Hydrogen Propulsion Refuelling Infrastructure Mobile Ecosystem), was officially announced by the UK Department for Transport (DfT) and Innovate UK on July 23, 2026. ZeroAvia formally highlighted its leadership of the project on August 4, 2026. The consortium aims to demonstrate that hydrogen-electric aircraft can be refuelled within standard commercial turnaround times.
Advancing liquid hydrogen infrastructure
The HyPRIME consortium includes ZeroAvia as the lead partner, alongside ULEMCO Ltd, GeoPura Ltd, Bristol Airport Ltd, and Birmingham Airport Ltd. The group is tasked with designing, building, and testing a mobile refuelling system capable of supporting commercial hydrogen-electric aircraft operations.
A key technical objective of the project is the capture and utilization of “boil-off” hydrogen. Rather than venting this gas, the system will redirect it to fuel hydrogen-powered Ground Support Equipment (GSE), such as aircraft tugs, and on-site power generation units. The findings from these tests will inform future regulatory, safety, and infrastructure investment decisions for scaling LH2 fuel across the UK aviation sector.
Airport integration and sustainability targets
Testing and demonstrations for the mobile refuelling vehicle will take place in live commercial airport environments at Birmingham Airport (BHX) and Bristol Airport (BRS). Integrating cryogenic fuels into active aprons requires coordination with regulators, including the UK Civil Aviation Authority (CAA), to establish safe handling procedures.
Tom Denton, Head of Sustainability at Birmingham Airport, stated that hydrogen electric aircraft are progressing quickly and airports need to understand how the fuel can be safely and efficiently integrated into daily operations.
“HyPRIME gives us the opportunity to test procedures and build the knowledge required to support future zero emission flights from Birmingham. Taking part in this project helps us maintain the momentum we’ve built over the past few years and moves us that bit little closer to achieving our mission of running a lower carbon airport,” Denton said in a press release.
Birmingham Airport recently reported an 11% reduction in location-based greenhouse gas emissions for 2025/26 and has set a target year of 2033 to achieve net zero carbon emissions from its direct operations. Bristol Airport is also expanding its hydrogen footprint, having been announced on July 23, 2026, as a partner in the CHOSAN (Cryogenic Hydrogen Optimised Systems for AviatioN) project, which aims to deliver the first flight of a liquid hydrogen-powered aircraft from a UK commercial airport.
Government funding and strategic partnerships
Project HyPRIME is funded under the UK Government’s Zero Emission Flight Demonstrator Programme. According to Bristol Airport, the total funding pool for the program is £8 million. Reporting by BusinessGreen indicates that over £2 million of that total was specifically awarded to the HyPRIME initiative.
The announcement follows a series of strategic agreements for ZeroAvia in July 2026. On July 8, 2026, the company announced a collaboration with Marshall Aerospace to explore hydrogen-electric capabilities for military and defense platforms. On July 17, 2026, ZeroAvia and Safran forged a partnership to develop high-temperature hydrogen fuel cells for aviation applications.
AirPro News analysis
We view Project HyPRIME as a necessary step in bridging the gap between hydrogen aircraft development and practical airport operations. While powertrain technology has advanced rapidly, the logistical challenge of handling cryogenic liquid hydrogen on a busy commercial apron remains a significant hurdle. By testing boil-off capture for GSE, the consortium is addressing both safety and economic efficiency. Proving that LH2 can be managed within standard turnaround times without disrupting existing airport operations will be essential for securing regulatory approval and driving future infrastructure investments.
Sources: ZeroAvia
Photo Credit: ZeroAvia
Sustainable Aviation
Lufthansa Group Earns EMAS Certification Across Three Airlines
Lufthansa Airlines revalidated under EMAS for 2025, while Lufthansa City Airlines and Lufthansa Aviation GmbH certified for the first time.
Lufthansa Airlines (LH) has secured revalidation under the European Union’s Eco-Management and Audit Scheme (EMAS) for the 2025 reporting year, while Lufthansa City Airlines and Lufthansa Aviation GmbH achieved the environmental certification for the first time.
In a press release issued on August 6, 2026, the Lufthansa Group announced the certifications, confirming the operators are implementing measurable environmental measures across flight operations and ground processes. The EMAS system is a voluntary European Union (EU) instrument that fully incorporates the requirements of the ISO 14001 international environmental management standard.
Operational efficiency and fuel savings
The validation process evaluated the airlines’ progress in reducing their environmental footprint. According to the company, the 2026 Environmental Statement emphasizes operational fuel efficiency. The report details how specific measures implemented from the flight planning stage through to landing result in measurable kerosene savings.
Broader climate technology initiatives
The EMAS validations follow several recent environmental technology initiatives across the Lufthansa Group. On July 30, 2026, the company announced it is testing a next-generation “AeroSHARK” surface film on a Lufthansa City Airlines Airbus aircraft. The film is designed to reduce aerodynamic drag and lower fuel consumption.
Earlier in the year, on May 20, 2026, the group expanded its climate protection portfolio to include Direct Air Carbon Capture and Storage (DACCS) technologies. This initiative involves partnerships with aerospace manufacturer Airbus and climate technology company Climeworks to filter carbon dioxide directly from ambient air.
AirPro News analysis
The addition of Lufthansa City Airlines to the EMAS registry indicates that the Lufthansa Group is prioritizing environmental compliance for its newer subsidiaries from their inception. Because EMAS requires public environmental reporting and continuous performance improvement beyond standard ISO 14001 compliance, maintaining this validation requires sustained capital investment in fuel-saving technologies like the AeroSHARK film and DACCS partnerships. We expect European operators to increasingly leverage voluntary frameworks like EMAS to demonstrate regulatory readiness ahead of stricter EU aviation emissions mandates.
Sources: Lufthansa Group
Photo Credit: Lufthansa Group
Technology & Innovation
Sarla Aviation Adopts Siemens Xcelerator for eVTOL Certification
Sarla Aviation integrates Siemens Xcelerator tools to support eVTOL certification and a 2028 commercial air taxi launch in Bengaluru.
Indian urban air mobility startup Sarla Aviation has adopted the Siemens Xcelerator software portfolio to accelerate the design and certification of its next-generation electric vertical take-off and landing (eVTOL) aircraft.
Announced in a press release on August 5, 2026, the partnership integrates Siemens Digital Industries Software into Sarla Aviation’s development pipeline. The integration aims to streamline the complex engineering and regulatory validation processes required for aerospace Certification, supporting the startup’s target of launching commercial air taxi operations in Bengaluru by 2028.
Digital integration for aerospace certification
Sarla Aviation will utilize multiple components of the Siemens Xcelerator portfolio, including Designcenter, Simcenter, Capital, Polarion, and Teamcenter. By implementing a comprehensive digital thread, the manufacturer intends to reduce physical design iterations through early-stage simulation and improve engineering collaboration across its teams.
A primary driver for the software adoption is the stringent regulatory environment for new aircraft. The Siemens toolset is specifically designed to support complex traceability, verification, and validation processes, including compliance with the DO-178C standard for airborne software certification.
“By adopting a comprehensive digital thread using the Siemens Xcelerator portfolio, companies like Sarla Aviation are able to help accelerate development, improve collaboration and support certification processes for next-generation aircraft,” said Mathew Thomas, Vice President and Managing Director for India at Siemens Digital Industries Software.
Advancing India’s urban air mobility ecosystem
The software partnership follows a series of technical and financial milestones for the Bengaluru-based startup. In July 2026, Sarla Aviation successfully completed flight tests of Sylla, its electric eVTOL technology demonstrator. The company reported that the testing validated integrated aircraft systems and controlled hover capabilities for what it describes as India’s largest and heaviest eVTOL demonstrator.
Financial backing for the development program expanded earlier in the year. In April 2026, IndiGo Ventures, the corporate venture arm of Indian airline IndiGo, made a strategic ₹100 million (approximately US$1.2 million) investment in Sarla Aviation. While IndiGo noted the investment does not signal a near-term entry into eVTOL operations, it positions the airline to explore India’s future air mobility ecosystem.
Sarla Aviation Co-Founder & CTO Rakesh Gaonkar stated that working with Siemens supports the company’s ability to innovate faster. He noted the ambition is to make electric air mobility accessible at scale while maintaining high standards of safety and performance.
AirPro News analysis
The transition from flying technology demonstrators to certifying a production aircraft is the most capital-intensive and high-risk phase for any eVTOL developer. By embedding enterprise-grade aerospace software early in its development cycle, Sarla Aviation is signaling a shift toward the rigorous documentation and traceability required by aviation regulators. Compliance with DO-178C is a notorious bottleneck for new aerospace entrants. We view the adoption of established certification management tools as a necessary step if the company intends to meet its ambitious 2028 commercial launch target in Bengaluru. The recent capital injection from IndiGo Ventures provides the financial runway to implement these foundational engineering systems.
Sources: Siemens
Photo Credit: Sarla Aviation
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