New Option: Aircraft for sale Airbus A321. The industry-leading quality and efficiency of Airbus’ A320 Family – of which the A321 is a member – is being further enhanced with its new engine option jetliner versions. Incorporating Airbus’ “Sharklets” and two new engine choices, the A320 Family offers maximum benefit with minimal changes from baseline A319s, A320s and A321s – delivering per seat fuel improvements of 20 per cent, along with additional range of up to 500 nautical miles/900 km. or 2 tonnes of extra payload.