Being a natural encyclopedist, Lev Bankovsky swung at the risky task of giving a living history of Russian aviation and, to some extent, cosmonautics. Naturally, in the closest application to Perm, as the spirit of the area - Genius loci. The book "Hello to you, sky!" is dedicated to aviation ethnology. Ethnology is the science of ethnos, but in this work Permians are taken as an "ethnos" - not the Finno-Ugric people, but all residents of the Perm Territory. A stretch, of course, but not from the point of view of Bankovsky.