How does the author use symbolism in the novel, TransAtlantic?

The uses the Vickers Vimy as a symbol of forward progress in history. This is the airplane that Alcock and Brown fly for the first transatlantic flight. The plane was used as a bomber in the war but Alcock and Brown refit it for the flight. They put fuel tanks in the bomb bays and make other modifications, changing it from a war machine to a plane that will make history.