What does "avgas" refer to in airport operations?

"Avgas" refers specifically to aviation gasoline, which is primarily used to power piston-engine aircraft. This fuel is designed to meet the unique requirements of aircraft engines that operate on a gasoline rather than jet fuel. Avgas is often characterized by characteristics such as a high octane rating to prevent engine knocking and is available in various grades, such as 100LL, which is commonly used in general aviation.

In the context of airport operations, understanding the type of fuel used by different aircraft is critical for ground operations, fueling protocols, and compliance with safety regulations. The operation and maintenance of piston-engine aircraft rely heavily on avgas, making it an essential component of airport fuel services tailored to general aviation.