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Each Contracting State shall, to the greatest extent practicable, keep other Contracting States fully and currently informed of its laws, regulations and requirements relating to airworthiness, including any complementary operating regulations, and any changes therein effected from time to time. It shall also, upon request by a Contracting State which proposes to apply the provisions of Article 2 of this Agreement supply, as far as practicable, details of its laws, regulations and requirements relating to airworthiness on the basis of which it had issued or validated a certificate of airworthiness.