A public testing of the largest hybrid aircraft signals to potential customers that it will very soon be ready for commercial service. It will be best operated for short-haul flights, such as short trips between cities.
The aircraft is based on Cessna 337 Skymaster developed back in the 1950s, but one of the two internal combustion engines was replaced with an electric one in Ampaire 337. The new aircraft also has improved electronics and some obsolete parts were replaced with upgraded ones.
The testing of the new aircraft will continue until August this year, whereupon all necessary improvements will be made. The final test flights will take place in Hawaii, and if they are successful, the plane will become commercially available in 2021.