Vertical Aerospace Ltd. has announced successful results from its Phase 3 piloted wingborne flight testing of the VX4 prototype, marking a significant milestone in its development of electric aviation. The testing involved flying the full-scale VX4 prototype on its wings, demonstrating stable and efficient flight over 250 miles, and surpassing expectations with over 22 billion data points collected. These results validate various aspects such as aerodynamic models and system reliability. The company is now progressing to the final test stage, known as transition testing, which will prove the VX4's ability to transition between vertical lift and wingborne flight. More details on these advancements will be shared at Vertical's Capital Markets Day on 17 September in New York.