Aircraft Rescue and Fire Fighting (ARFF) End of Course Practice Test

AVGAS is highly flammable and can spread rapidly, creating a danger far beyond the fuel tanks themselves. Its vapors ignite easily and can travel with air to distant ignition sources, so a spill or leak on the ramp can flash into flames quickly. The hazard isn’t confined to the tank; it can pool, spread along surfaces, and affect a large area, especially in a firefighting scenario where ignition sources may be nearby. That’s why the emphasis is on its high flammability and rapid spread. The other statements ignore these realities—AVGAS is not non-flammable, it is released during incidents, and the danger is not limited to the tank area. In practice, responders manage this with rapid source control, upwind precautions, foam suppression, bonding to prevent static, and keeping a safe distance while applying extinguishing agents.