Ampaire has completed test flights at Camarillo Airport in California on what it claims is the world's highest capacity hybrid-electric aircraft.
The Ampaire 337, was retrofitted with Ampaire's proprietary electric propulsion system and is powered by a lightweight battery system.
The electric motor, powered by battery, replaces the combustion engine of the aircraft's original two-engine configuration.
“This is a significant step for aviation because never before has a hybrid-electric aircraft this large flown. Ampaire’s 337 is built with a direct path towards commercialisation – moving electric aviation firmly from futuristic to attainable,” a statement from Ampaire said.
“Ampaire is proud to lead the aviation industry in transportation electrification, and we recognise the importance of electric aviation for climate change and community connectivity.”
Ampaire has stressed that the aircraft sees significant greenhouse gas emissions savings and will reduce operating costs.
Ampaire plans to launch commercial operations in 2021.