AltoVolo Sigma Reservation
£1,000.00Price
Secure 1 of 100 Launch Edition AltoVolo Sigma build slots by paying your reservation fee today. Strictly Limited to 100 custom units.
SKU: Sigma Launch Edition Apply
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2:1
Power to Weight
1.5x greater than a helicopter
22Mins
Charge Time
On a 300kW Charger
10.4
Lift to drag ratio
2x greater than a helicopter
AltoVolo has dubbed the Sigma the world's first “HyperTOL” (Hybrid Performance Vertical Take-off and Landing) aircraft. Using tilting electric motors and wings (4.5m span) with elevons for efficient flight. Achieving a lift-to-drag ratio of 10.4 when cruising at 220mph. The vehicle has a payload of 270kg and a maximum take-off weight of 980kg. At take-off, the custom variable pitch propellers keep noise levels below 70dB(A). Ansys simulation software has been used to validate acoustic and aerodynamic performance and optimise aerodynamic surface geometry. A composite tub chassis allows modular lightweight and cost-effective assembly. Long fibre injection (LFI) moulding is used for carbon fibre parts. This modular assembly helps reduce the ongoing cost of servicing. An APU provides range extension with thrust provided by the electric powertrain exclusively. Batteries have been sourced to provide power with a desirable energy density of 400 Wh/kg.
Fly in bad weather
Full instrument flight capability, redundant flight instruments, and a certified IFR-capable avionics stack mean the Sigma keeps flying when visibility and conditions ground other aircraft.
Pilot Training
Flying the Launch Edition Sigma is designed to be accessible without compromising safety. Our proposed foundation programme follows a light-sport eVTOL syllabus of around 25 hours, split between high fidelity simulator sessions and in-aircraft flight time. Simulator hours build core competency first, hover control, vertical take-off and landing, and basic transitions to forward flight, in a zero-risk environment, before pilots move into the aircraft itself to consolidate those skills under instructor supervision. For owners wishing to operate in dense urban environments, an extended pathway adds a further 15–20 hours, again blending simulator-based scenario training with real-world flight. This tier covers advanced airspace integration, vertiport operations, low-altitude obstacle navigation, and emergency procedures specific to congested corridors, building the judgement that only comes from repeated exposure to complex scenarios, safely rehearsed in simulation first. These figures represent the structured training curriculum only. Progressing through the operational tiers to full urban airspace access will require significant additional flight hours beyond training, typically accumulated over two to four months, to build the currency and real-world experience regulators expect before unlocking each tier. Underpinning both pathways is the Sigma's planned type certification, structured to support a tiered operational envelope. This allows newly qualified pilots to operate confidently in less complex environments, while more experienced, urban-trained pilots unlock full access to city airspace. Only pilots holding an instrument rating are granted authority to fly in bad weather conditions.
25hrs
Foundation eVTOL training Programme (sim + in-aircraft)
20hrs
Additional urban operations Training Tier
40hrs
Optional Instrument rating
Bad Weather Training
Avionics
The AltoVolo Sigma's flight deck is built around dual Garmin GI 275 displays, giving pilots two independent sources of attitude, airspeed, altitude, and vertical speed. If one display fails, the other continues to provide the primary flight data needed to fly safely, and a dedicated GI 275 engine monitor keeps full aircraft health information visible at all times. Backing up the primary flight displays is the Embention Veronte system, which runs on its own independent power source and feeds a separate cockpit display. This gives pilots a third, fully independent attitude reference, isolated from the GI 275s' power and data paths, so a single point of failure can't take out the pilot's situational awareness. Communication and traffic awareness are handled by the GMA 345 audio panel and GTS 800 traffic system, giving pilots clear intercom and radio management alongside real time awareness of nearby aircraft, essential for safe operation in busy or controlled airspace. Navigation and surveillance are anchored by the GNX 375, combining GPS/WAAS navigation with ADS B In/Out, integrated transponder functionality, and cell phone connectivity. This enables RNAV approaches and full compliance with modern airspace requirements, while comm coverage is extended by the GTR 205 radio. A traditional magnetic compass provides a simple, always available backup reference, and an iPad running a moving map application adds a further layer of situational awareness, including terrain and traffic display, that remains available even in the event of an aircraft power loss. Together, this stack, dual GI 275s, Veronte backup attitude system, GMA 345, GTS 800, GNX 375, and GTR 205, delivers a genuinely redundant IFR capable panel. Multiple independent sources of flight data mean pilots have the information they need to fly with confidence, even if individual components fail along the way.
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Certification Pathway
The Sigma's certification pathway spans three of the world's leading aviation authorities, each converging on a shared goal: making eVTOL flight safe, accessible, and true to the highest global standard, whether privately owned or commercially operated. In the UK, the aircraft itself is certified under SC-VTOL, EASA's Special Condition for VTOL aircraft, the same rigorous certification basis the CAA has adopted as it builds out its own regulatory framework for this category. For commercial operations, the CAA's eVTOL Delivery Model (CAP 3169) further sets out the roadmap to enable passenger-carrying eVTOL services by the end of 2028, ensuring the Sigma is positioned for both private ownership and commercial deployment across UK and European skies. In Europe, EASA continues to expand its regulatory framework for Vertical Take-Off and Landing Capable Aircraft (VCA) through updates to Regulation (EU) 2024/1111, introducing new acceptable means of compliance and guidance material for crewed VTOL operations, including flights over urban areas. In the United States, the FAA's Special Federal Aviation Regulation No. 120 (SFAR 120, codified as 14 CFR Part 194) creates a dedicated framework for powered-lift pilot certification and training. Private owner-pilots operate under Part 91, the FAA's general operating rules for private aircraft, while commercial and rental operations are supported under Part 135, the framework for on-demand and commuter services, giving the Sigma a clear path whether flown by an individual owner or operated as part of a fleet. Together, these frameworks are being purpose-built for aircraft like the Sigma: vehicles that don't fit neatly into legacy categories, but demand the same uncompromising safety standards. AltoVolo is designing to these evolving requirements from day one, rather than retrofitting compliance later, supporting a tiered path where newly qualified pilots can operate confidently in less complex environments, while advanced, urban-trained pilots unlock full access to congested city airspace. This multi-jurisdictional approach ensures the Sigma isn't just built for one market or one ownership model, but engineered to meet the highest global standard, wherever, and however, it flies.
UK
CAA
Certification Under SC-VTOL
CAP 3169
EU
EASA
Part-66 and New Air Mobility Airworthiness Framework
US
FAA
SFAR120 part 91 & 135
Full Type Certification
Pathway to Scaling Production
AltoVolo's decision to limit the Launch Edition to 100 personal aircraft isn't a constraint, it's a deliberate strategy. In an industry racing toward mass production and commercial fleets, we've chosen a different path: prove production, operation and maintenance, excellence at a scale we can fully control before scaling further. Producing 100 aircraft allows a level of customer attention that commercial-scale manufacturing simply cannot offer. Each Sigma can be built, tested, and delivered with genuine care, not rushed through a production line optimised purely for volume. Every owner becomes part of a small, closely supported cohort, with direct access to the people building their aircraft, rather than a faceless customer number in a much larger operation. This approach also protects quality at the moment it matters most. Early production runs are where manufacturing issues surface, design refinements get made, and real-world flight data accumulates. By deliberately keeping volume low, AltoVolo can respond to that learning quickly, refining the Sigma, rather than committing to rigid tooling and processes before the aircraft has proven itself in the hands of real owners. Commercial operation, fleets, charter services, urban air mobility at scale demands a different level of manufacturing maturity, supply chain robustness, and regulatory track record. Rather than attempting that leap immediately, AltoVolo is using these first 100 aircraft to enhance the operational experience, safety data, and customer trust that make commercial scaling credible rather than speculative.
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