Apparently the terms of the 1992 agreement are:
Under a 1992 US-European Union agreement, European support for new aircraft programmes - provided in royalty-based loans - was limited to 33% of the total cost, repayable with interest within 17 years.
On the other hand, indirect US support through NASA or military programmes was limited to 3% of turnover for the US large commercial aircraft industry.
Are these the correct terms of the agreement? If so, it certainly appears unfair to the US aircraft programs. Why not request a change, or demand one?