ZeroAvia is making significant progress in the development of its hydrogen-electric powertrains for commercial aviation. The company is currently conducting ground tests of its ZA2000 powertrain on an Alaska Airlines Dash 8-400, with plans to advance to flight testing within the next few years. ZeroAvia's focus initially lies on certifying the ZA600 engine for smaller commercial turboprops, with expectations for entry into service by 2026. Several test flights have already been completed with the ZA600 prototypes, demonstrating the technology's viability. The company is also working on the ZA2000, intended for larger turboprops, with targets for engine certification in 2027 and entry into service in 2028. Additionally, ZeroAvia is collaborating with Mitsubishi's regional jet division to develop the ZA2000RJ variant for regional jets. Airbus has shown confidence in ZeroAvia's technology by becoming one of the lead investors. ZeroAvia's CEO, Val Miftakhov, expressed optimism about potentially powering Airbus' ZEROe concept aircraft in the future. The company's positive progress contrasts with the challenges faced by a competitor, Universal Hydrogen, which recently ceased operations. ZeroAvia's approach focused on fuel cell design has led to successful advancements, including the hiring of former Universal Hydrogen staff.