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This R&D enables you to unlock different aircraft models specialized in goods transportation. It also enables you to unlock the different cargo services. Once these services are unlocked, you can activate them on the Services page.
Some researches have two levels, the second level is always an improved version of the first one if it is a service.
The bonus researches of this R&D grant airline characteristic points directly. Thus it is not necessary to configure them on the Services page, unlike normal researches which are on the same page.
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