Don't know if the same term is used, but the Apaches were delivered as "air vehicles". Engines were contracted separately I think (RR?). The main reason was the avionics offered by the US had to be respecified when another project office (AH didn't have any avionics people) pointed out much of what was being offered was obsolescent, some with "repair by cannibalisation" maintenance policies since the early 80s. Bendix 221 radio was one example. The contract for aircraft that actually flew was hastily changed. And a 4 man avionics section was formed.