An aircraft that can transport between approximately 30 and 100 passengers, and is intended for short and medium haul flights can be considered to be a Regional Aircraft. The challenge is to improve the passenger experience so that regional aircraft offer a comparable level of inflight comfort, free from noise and vibration, with a comfort level comparable or better than today’s modern jets and with a reliability of service well beyond today’s service into small and regional airports. The global strategy of the REG IADP is to integrate and validate, at a/c level, advanced technologies for regional and multi-missions aircraft, so as to drastically de-risk their integration on future products. The goal is to accelerate the innovation enabling regional and multi-missions vehicle products and services that will bring significantly environmental and socio-economic benefits as soon as they are technically and economically viable.