Jet A-1 is a kerosene grade of fuel suitable for most turbine engined aircraft. It is produced to a stringent internationally agreed standard, has a flash point above 38°C (100°F) and a freeze point maximum of -47°C.
It is widely available outside the U.S.A. Jet A-1 meets the requirements of British specification DEF STAN 91-91 (Jet A-1), (formerly DERD 2494 (AVTUR)), ASTM specification D1655 (Jet A-1) and IATA Guidance Material (Kerosine Type), NATO Code F-35.
Additives Available: Fuel System Icing Inhibitor (FSII)In cold climate operations, or as aircraft ascend to altitude even in tropical climates, water-freezing tempeartures can occur. As fuel cools, roughly one part per million of dissolved water can come out of solution as free water for every degree fahrenheit of temperature drop.
Certain aircraft without fuel system heaters require FSII be properly blended into the fuel to prevent free water from freezing in the fuel system, which could cause blockage of filters and fine passges by the formation of ice cystals.