Beyond Aero’s hydrogen‑powered business jet has cleared Preliminary Design Review, 

proving its architecture is mature enough for certification under the same standards used for large commercial airliners.  

Eight passengers, two crew, 800 nautical miles — the BYA‑I One is built for business travel, not just experiments. Credit: New Atlas


The most striking detail is the fuel itself: gaseous hydrogen stored at 700 bar in tanks mounted above the wing. 

Six redundant fuel cells hum quietly, proving hydrogen propulsion can match turbine reliability. Credit: Beyond Aero

That choice avoids the complexity of cryogenic liquid hydrogen, but it comes with a weight penalty. 

Each kilogram of fuel requires about twenty kilograms of tank. For a business jet, where efficiency and payload are everything, that trade‑off is bold.  

Chief Engineer Luiz Oliveira explained the milestone plainly: “The Preliminary Design Review confirms that the aircraft configuration and its major systems — propulsion, hydrogen storage, aerodynamics and avionics — have reached the level of maturity required to support a certifiable architecture.” In aviation, a Preliminary Design Review is the point where the concept stops being theoretical. 

Certification under CS‑25 and Part 25 means this jet must meet the same safety bar as an Airbus A320. Credit: New Atlas



It means the design has been tested in wind tunnels, validated against computer models, and shown to be viable for certification.  

Certification is the next hurdle. 

Hydrogen tanks at 700 bar weigh 20× more than the fuel inside, yet Beyond Aero’s jet passes design review, moving toward zero‑emission certification.



Beyond Aero is pursuing CS‑25 and Part 25 standards, the same transport‑category rules applied to commercial airliners. 

From concept to certifiable: Beyond Aero’s hydrogen jet design matures



That decision signals intent: this isn’t a niche demonstrator, it’s a business jet designed to meet the highest safety bar from day one. 

The company’s leadership includes veterans from Embraer and Airbus, embedding airline‑level processes into a small jet program.  

The aircraft itself is called the BYA‑I One. 

It’s designed to carry eight passengers and two crew, with a range of 800 nautical miles and a cruise speed of 300 knots. 

Propulsion comes from six redundant 400‑kilowatt fuel cells driving electric propfans. Redundancy matters here. 

If one fuel cell fails, others keep the aircraft flying, a safeguard against the reliability questions that often shadow new technologies.  

Hydrogen propulsion offers clear benefits. 

Fuel cells produce only water vapor, eliminating carbon emissions and reducing noise compared to gas turbines. 

That makes the aircraft attractive to operators facing carbon taxes or reputational pressure around emissions. 

But infrastructure remains a challenge. 

Hydrogen refueling networks are sparse, and while 700‑bar gaseous hydrogen is easier to handle than cryogenic liquid, airports still need specialized equipment.  

CEO Eloa Guillotin framed the milestone as proof of feasibility: “The completion of the Preliminary Design Review demonstrates that a certifiable hydrogen‑powered business aircraft is achievable. 

Our objective is to develop a new business aircraft tailored to the constraints of hydrogen‑electric propulsion, while meeting the performance, safety, and operational standards expected in business aviation.”  

The program now moves into detailed design and system verification. 

That means defining every component, from thermal management to avionics, and proving they work together under certification scrutiny. 

Hardware validation has already begun, with subscale and full‑scale propulsion tests confirming the fuel cell system’s viability.  

The timeline is ambitious. Beyond Aero is targeting entry into service by 2030. 

That’s less than four years after completing detailed design, a pace that rivals conventional jet programs. 

Whether regulators, infrastructure, and market demand align in time remains uncertain. 

But the milestone shifts hydrogen aviation from concept to execution.  

The final perspective is this: hydrogen aviation is no longer a distant idea. 

With certification pathways defined and design reviews passed, the question is not whether hydrogen can fly, but whether it can scale. 

The BYA‑I One is positioned as a test case. If it succeeds, it won’t just prove a new aircraft — it will prove a new fuel for business aviation.