Complex sentence: Many European airlines are required to do utilize FOQA or flight data management programs (Europe prefers the term "FDM") by regional legislation, however in the United States, the FAA does not require any FOQA programs for commercial operators.
Split into simpler sentences: Many European airlines are required to do utilize FOQA or flight data management programs (Europe prefers the term "FDM") by regional legislation. However in the United States, the FAA does not require any FOQA programs for commercial operators.