Home2007 Treaties and Agreements ...United Kingdom (07-822) – Memorandum of Understanding Concerning Cooperation on the Future Development, Interoperability, and Support of the CH-47 Chinook Helicopter hide United Kingdom (07-822) – Memorandum of Understanding Concerning Cooperation on the Future Development, Interoperability, and Support of the CH-47 Chinook Helicopter TIAS Office of Treaty Affairs August 22, 2007 Defense: Research and Development Memorandum of understanding signed at Arlington and Bristol August 13 and 22, 2007; entered into force August 22, 2007. With annexes. Download attachment [2 MB] Tags Defense Treaties United Kingdom