Plain English Meaning
A type of jet fuel made from kerosene that stays liquid at very cold temperatures. It is the standard jet fuel used in most countries outside the United States.
Full Definition
A kerosene-based turbine engine fuel used primarily in international civil aviation, with a freezing point no higher than -47°C and a flash point of approximately 38°C. Jet A-1 is the standard jet fuel specification used outside the United States and is suitable for long-range and high-altitude operations where very low temperatures are encountered.
Context Anchor
Seen in fuel grade discussions, aircraft , fueling , and aircraft operating documents for -powered aircraft.