It is considered a matter of vital international interest to assure the survival of general aviation and to consolidate its important role in the overall transportation picture around the globe. However, in spite of plentiful supplies of crude, the general aviation industry has suffered severe setbacks in recent years due in part to increased costs and decreasing availability of aviation gasolines. Simply stated, the vulnerability of these fuel supplies is now well substantiated and a concerted effort involving fuel producers, general aviation manufacturers, professional societies such as The American Society for Testing and Materials (ASTM) and The Society of Automotive Engineers (SAE), and user groups is required to establish long-range strategies in this area.