Launched as a concept called the MLJ (Mid-Light Jet) at the NBAA Convention in 2007, the Legacy 450 (and its big brother the Legacy 500) were officially launched at EBACE in May 2008. It is designed to carry 7 to 8 passengers over 2,300 nautical miles (4,300 km). The aircraft has full fly-by-wire flight controls, a Collins ProLine Fusion flight deck, Honeywell HF7500 series engines, and a full stand up flat floor cabin. The aircraft's first flight occurred on 28 December 2013. The entry into service is in 2014.