Electric aircraft developer Heart Aerospace has completed the first flight of its X1 battery-electric demonstrator, a milestone the company describes as one of the most significant to date for the wider electric aviation industry.
The full-scale X1, registered N301HX, took off from runway 35 at Plattsburgh International Airport in upstate New York on August 12, 2026. The four-engined aircraft flew a piloted 27-minute sortie, reaching an altitude of about 1,100 feet (335 metres).
By Heart's account, the aircraft is the largest battery-electric aeroplane ever to fly. It has a wingspan of 32.3 metres (106 feet), a length of 23.2 metres (76 feet) and a take-off weight of more than 11,300 kilograms (25,000 pounds), with a distinctive T-tail and a truss-braced high wing. Its electric propulsion system generated more than one megawatt of power entirely from batteries during the flight, which the company said consumed roughly $5 worth of electricity.
The X1 is a technology testbed rather than a production aircraft. Heart says it is “representative” of the ES-30, its planned 30-seat hybrid-electric airliner, which will also feature a thermal engine for extended range and payload. Flight testing of the pre-production ES-30 is due to begin in 2028, with service entry intended for 2031, and the initial aircraft is being developed at Heart's Los Angeles facility.
The first flight was carried out under a special US FAA airworthiness approval and covered taxiing, take-off, climb, airborne manoeuvres and landing. It was watched closely by prospective customers and investors, including United Airlines. “The first flight of X1 is a major technical achievement for Heart Aerospace,” said United's chief financial officer, Michael Leskinen.
The milestone arrives against a backdrop of stubbornly high jet-fuel prices, which have sharpened airline interest in lower-cost propulsion. Battery-electric and hybrid-electric designs such as the ES-30 are aimed primarily at shorter regional routes, where the energy demands are lower and the operating-cost savings from electricity can be most pronounced.
Whether that promise translates into service will depend on the years of certification and flight testing still ahead, but the X1's maiden flight gives Heart a full-scale, flying reference point as it works toward the production airliner.
Sources: AeroTime, FlightGlobal. Featured image: AI-generated by AviationShop. By James Holloway.
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