"The CHC Safety summit is a unique and valuable forum where safety professionals and operators from a global cross-section of the industry join together to share knowledge and train each other for the common goal of preventing helicopter accidents." Source: Fred Brisbois, a member of Sikorsky's Qualification Assurance Board.
A service specifically designed to provide, upon pilot request, timely weather information pertinent to his/her type of flight, intended route of flight, and altitude.
The U.S. Centennial of Flight Commission published this essay outlining the principals of lighter-than-air flight. While the principles of aerodynamics do have some application to balloons and airships, LTA craft operate principally as a result of aerostatic principles relating to the pressure, temperature and volume of gases.