 He also engaged in efforts to locate the then missing Joseph Le Brix who had gone down on the coast of Burma near Moulmein in an attempt to break a speed record.Koenig-Warthausen finally left Bangkok on 25 March, heading south to Prachuap Khiri Khan and Songkhla, and experiencing another tropical storm while flying over Penang before arriving at Singapore.He stayed there for three weeks, making the short flight south to cross the Equator.