• Heart Aerospace's ES-30 hybrid-electric aircraft cleared for flight testing.
• Icelandair signed a letter of intent to purchase five ES-30 aircraft.
• The aircraft is expected to enter commercial service in 2031.
• It can fly up to 200 km on battery power and 800 km with sustainable aviation fuel.

This development may indicate a significant step towards commercial electric aviation, with Heart Aerospace's hybrid-electric aircraft potentially reducing operating costs and environmental impact. The partnership with Icelandair suggests a growing interest in sustainable aviation solutions, which could influence the future of regional air travel.