Home Airlines Heart Aerospace Unveils Electric Propulsion System for ES-19 Airliner Heart Aerospace Unveils Electric Propulsion System for ES-19 Airliner 25 Sep 2023 | AirlinesElectric AircraftNews Heart Unveils Electric Propulsion System for ES-19 Airliner | AIN 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.