Home Airlines Heart Aerospace Unveils Electric Propulsion System for ES-19 Airliner AirlinesElectric AircraftNews Heart Aerospace Unveils Electric Propulsion System for ES-19 Airliner SOURCEAINONLINE.COM 30 Sep 2020 248 Heart Unveils Electric Propulsion System for ES-19 Airliner Sweden-based Heart says it will have the 19-seat, four-engine, fixed-wing aircraft ready to start commercial operations from the summer of 2026.