Analysis of Heliport Environmental Data; Intracoastal City

During a 2-day period in May 1988, heliport environmental data were collected at Petroleum Helicopter Incorporateds Heliport in Intracoastal City, LA. The purpose of this data collection activity was to gather measurements of rotorwash at a heavy use heliport frequented by larger helicopters with higher gross weights than observed during previous data collection activities. The previous data collection activities are documented in Technical Note DOTFAACT- TN8754, I, titled, Analysis of Heliport Environmental Data Indianapolis Downtown Heliport, Wall Street Heliport, Volume I, Summary. During this operation, ten wind vector transmitters were situated at various locations around the facility in order to gather information to describe the rotorwash induced wind speed and wind direction changes. This report documents the results of this data collection activity. the data collection and analysis methodology are explained. Graphical presentations of the heliport environment and of rotorwash induced wind speeds and wind speed and direction changes are included. The Concepts Analysis Division Report, ACD-330-89-10, Analysis of Heliport Environmental Data, Intracoastal City, LA, contains the heliport wind speed and direction plots for each flight. kr