It is same dilemma for Taiwan homemade Air-fighters -IDF and others (T5-BE training jet): After fulfilling the contracted production run of 137 Indigenous Defense Fighter (IDF) aircraft by 2000, the manufacturing equipment used for machining IDF parts was sealed under the agreement terms with the United States government. As a result, Taiwan has been restricted from reproducing any additional IDF jets beyond the original order due to limitations imposed by the U.S. on the transfer of critical aviation manufacturing technology and tooling.