Complex sentence: The program was launched in November 2014 to build five aircraft, replacing the previous five Beluga fleet with 30% more capacity: it will be able to carry two A350 XWB wings instead of one.
Split into simpler sentences: The program was launched in November 2014 to build five aircraft, superceding the previous five Beluga fleet with 30% more capacity. It will be able to carry two A350 XWB wings instead of one.