The initial allocation of system design responsibility was negotiated between the four aircraft companies, Deutsch Aerospace, British Aerospace,Carsa and Allenia and  against the background of an M O U which said we must share the technology on this project between the four nations and in a particular way which  ensures that each of the nations  has got access to all the high technology aspects of the project er therefore  the individual companies identified  those areas of the project, were  they felt they either could lead best or wish to lead and for the United Kingdom British Aerospace erm  identified the avionics system integration as the major complex task that they would take responsibility for.