 He served as president of the Air Force Association from September 1947 to September 1948.In December 1949, to promote the AFA's "airability program", an aviation awareness campaign, Lanphier made a round-the-world flight using scheduled airlines, making the 22,140 mile trip in under five days.He carried with him a letter from President Harry Truman commemorating the 46th anniversary of the first flight of the Wright brothers.