Vertical Aerospace Achieves Key Milestone with First Piloted Transition Flight

Vertical Aerospace has reached a major milestone in the development of its electric vertical takeoff and landing (eVTOL) aircraft, completing its first piloted one-way transition flight.

The VX4 prototype, flown by test pilot Paul Stone on April 2nd at the company’s flight test center at Cotswold Airport in England, demonstrated its ability to transition from vertical lift to forward flight. The aircraft lifted off vertically, accelerated into wingborne flight, and then landed conventionally on a runway. During the flight, it reached a speed of 65 knots—about half of its projected top speed of 120 knots.

This achievement follows several months of careful, incremental testing that began in December. During that period, Vertical Aerospace focused on gradually expanding the aircraft’s flight envelope, working from both ends of the transition—accelerating out of hover and slowing down from forward flight—without completing the full maneuver until now. Progress was occasionally slowed by winter weather conditions in the UK, as well as strict safety protocols under the UK Civil Aviation Authority’s Permit to Fly requirements, which mandate detailed data reviews between flights.

The one-way transition marks an important step toward the full transition sequence, where the aircraft will take off vertically, cruise in forward flight, and return to a vertical landing. Successfully completing that full cycle remains a key goal as the company moves closer to certifying its production aircraft, the Valo.

Vertical Aerospace is also preparing to expand its testing program. A second VX4 prototype, unveiled earlier this year, is expected to join flight operations soon, helping to further explore the aircraft’s capabilities. Later this year, it will be upgraded with a hybrid-electric powertrain for additional flight trials.

Looking ahead, the company plans to build its first fully conforming Valo aircraft as part of a certification test fleet that could include up to seven aircraft. This phase will follow a critical design review and continued progress in manufacturing and battery development.

With this milestone, Vertical Aerospace becomes the third major Western eVTOL developer to achieve a piloted transition flight, following similar efforts by Joby Aviation and Beta Technologies—both of which have already completed the full transition sequence. Other competitors are also advancing, with Archer progressing through piloted vertical flight testing, Eve Air Mobility conducting remotely piloted hover tests, and Wisk developing autonomous flight capabilities.

Despite the technical progress, financial challenges remain. The company recently announced a potential funding package of up to $850 million, including $80 million in near-term equity. However, much of this funding depends on market conditions and future agreements, leaving some uncertainty around long-term financing.

Industry analysts note that while the funding plan helps address immediate financial needs, questions remain about sustained investment. Vertical Aerospace has previously suggested that achieving piloted transition could attract a strategic partner, but no such partnership has been confirmed so far.