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Continue to ChatFirst Diamond DA42 OPA contract signed with Swiss Department of Defence https://aviationnews.eu/news/2012/01/first-diamond-da42-opa-contract-signed-with-swiss-department-of-defence/
First Diamond DA42 OPA contract signed with Swiss Department of Defence https://aviationnews.eu/news/2012/01/first-diamond-da42-opa-contract-signed-with-swiss-department-of-defence/