Air taxi startup Joby Aviation Inc. plans to double aircraft output capacity at its main production site in California, just weeks after completing piloted test flights in Dubai.

The expansion will enable the Marina, California facility to build up to 24 aircraft per year, the company said in a statement Tuesday. It also said “equipment installation is underway” at a new site in Dayton, Ohio, for building and testing aircraft components for a pilot production line.

Earlier this year, the company said in a shareholder letter that it expected parts production to begin in Dayton from mid-2025, marking a delay from initial plans to start output at the site last year.

Shares of Joby rose 14.4% in morning trading. The company’s stock has soared about 42% since it announced on June 30 it completed the Dubai piloted test flights.

Engineers from Toyota Motor Corp., which became Joby’s largest shareholder in May, are “deeply integrated” into operations in areas such as design, manufacturing and quality control, Joby said Tuesday.

The Santa Cruz, California-based company is among a handful of startups developing eVTOL aircraft — electric vertical takeoff and landing vehicles — to fly customers on short commuter journeys via battery-powered air taxis. Joby said recently it aims to start commercial passenger services in Dubai by early 2026, after having previously targeted the end of this year.