antonio, it's Bristow, not Bristows. And the 1553 databus fitted to mil platforms would not be fitted to any future orders that Bristow racked up if they so chose to purchase them. Having said that 1553 is now accepted by the FAA so it depends under which regulator people like Bristow would licence themselves. Either way it would not be a problem (except if parts on the DB fell under ITAR).