In Jan. 1934, he joined Professor Georgii's South America expedition, along with Peter Riedel, Hanna Reitsch, and Heini Dittmar, to study thermal conditions, with his sailplane "Moatzagotl" [REF].
Wolf Hirth also took part in International Championships of Touring Aircraft Challenge 1929, Challenge 1932 (6th place) and Challenge 1934 (13th place).