Smartphone with a picture of VX4 aircraft with Vertical Aerospace logo in background. Key Points Vertical Aerospace's most critical flight test of the year is now underway, aiming to provide the definitive engineering proof point for its aircraft design. By focusing on selling aircraft to expert partners, the company's model avoids the substantial costs associated with operating its own airline. This OEM strategy could facilitate faster global scaling and provide a clearer path to profitability through ...