As part of the Dash 80 's demonstration program , Bill Allen invited representatives of the Aircraft Industries Association ( AIA ) and International Air Transport Association ( IATA ) to the Seattle 's 1955 Seafair and Gold Cup Hydroplane Races held on Lake Washington on August 6 , 1955 .
People from Aircraft Industries Association ( AIA ) and International Air Transport Association ( IATA ) came to the 1955 Seafair and Gold Cup Hydroplane Races on August 6 , 1955 .