Vertical Aerospace Completes First Piloted One-Way Transition Flight

Vertical Aerospace has completed its first piloted one-way transition flight, marking new progress in its program to develop an electric vertical-takeoff-and-landing (eVTOL) air taxi.

The VX4 prototype was flown by test pilot Paul Stone April 2 at Vertical’s flight test center at Cotswold Airport in England. The aircraft performed a one-way transition, taking off vertically before accelerating into wingborne flight and landing conventionally on a runway. During the test, the aircraft reached 65 kt., roughly half its top speed of around 120 kt.

The milestone caps several months of incremental testing that began in December, as Vertical worked to expand the transition envelope from both ends—accelerating out of hover and decelerating from wingborne flight—without fully completing the maneuver. Progress had been slowed at times by poor winter weather in the UK, as well as the deliberate pace required under the UK Civil Aviation Authority’s Permit to Fly regime, which requires data review between flights.

“This aircraft was made to transition,” Stone said in a statement. “From the moment the front propellers tilted and the aircraft began to accelerate, the response was exactly as the simulation predicted—smooth, stable and fully under control throughout. What the engineering team has built here is genuinely extraordinary. The aircraft handled the transition with a level of confidence that gives me great optimism for everything that comes next.”

The one-way transition represents the first half of the full transition sequence, in which an aircraft takes off vertically, transitions to wingborne cruise and then returns to a vertical landing. Completing that full maneuver remains a key objective for Vertical as it advances toward certification of its production aircraft, known as the Valo.

A second VX4 prototype, rolled out earlier this year, is expected to join the test fleet and support expanded envelope testing. The aircraft will later be modified with a hybrid-electric powertrain for flight trials planned this summer.

Looking ahead, the company plans to assemble its first conforming Valo aircraft later this year as part of a certification test fleet expected to include as many as seven aircraft. That effort will follow completion of a critical design review and continued maturation of its manufacturing and battery production capabilities.

Vertical is now the third major western eVTOL developer to demonstrate piloted transition following Joby and Beta Technologies, although unlike Vertical, both those companies have completed the full maneuver. Archer is currently working through piloted VTOL testing, having completed runway-based testing last year, while Embraer-backed Eve Air Mobility performed its first remotely piloted hover in December. Boeing-owned Wisk also made a first hover flight with its autonomous Gen 6 aircraft late last year.

Despite the technical progress, Vertical’s financial position remains a major concern. The company recently outlined a financing package worth up to $850 million, including $80 million in near-term equity funding and a series of equity- and debt-linked facilities extending into 2027 and beyond. However, much of that capital remains contingent on market conditions and final agreements.

Analysts have described the financing as addressing immediate liquidity needs while leaving longer-term funding uncertainty unresolved. Vertical had previously indicated that achieving piloted transition could act as a catalyst for attracting a strategic investor, but no such partner has yet emerged.

Investor skepticism toward the eVTOL sector has continued to weigh on the company’s shares, which remain depressed despite recent progress. The stock has declined by around 60% since the start of the year and continues to trade at a fraction of the valuation of its U.S. competitors.

Following news of the partial transition flight on April 6, Vertical’s shares closed roughly flat at around $2.30.