The KLM/Northwest Airlines case and general principles applicable to all investments and cooperative arrangements between U.S. air carriers and foreigners - Air and Space Law View The KLM/Northwest Airlines case and general principles applicable to all investments and cooperative arrangements between U.S. air carriers and foreigners by - Air and Space Law The KLM/Northwest Airlines case and general principles applicable to all investments and cooperative arrangements between U.S. air carriers and foreigners 15 1 Air and Space Law