Fly in open aircraft, in the dead of winter? Could such a thing really be possible? It just had to work. And the time was now: the beginning of the 1920s, right after the war. Politicians and journalists were the first to crouch on uncomfortable planks, “air-cooled” and surrounded by mail bags and parcels. The were real pioneers. But it wouldn‘t be long until they‘d be sitting in full-fledged passenger aircraft, equipped with heated cabins.