The conquest of the skies above the world's oceans is the subject of an exhibition which opened at Palma airport yesterday. A vast collection of model planes and photographs chart the history of global aviation and how the pioneering pilots and plane manufacturers of yesteryear conquered the globe and with trans-oceanic flights. The exhibition, which will be open to the public until November 20, is based on a book written by journalist Felipe Ezquerro whose information and photographs have been collated by the Malaga Airport Aula Flying Club and Air Museum. Head of Spanish Airport and Air Traffic Control Authority, AENA's documentation and publication department, Carmen de Cima, said yesterday that the material in Ezquerro's book is enough on its own to stage an exhibition and the majority of his photographs are the only ones in the world. The exhibition centres on the pioneers of trans-oceanic flying between 1919 and 1939.