A Class D fire involves which type of material?

A Class D fire specifically relates to fires that involve combustible metals. These materials include substances such as magnesium, titanium, potassium, and sodium, which burn at high temperatures and can be difficult to extinguish with conventional fire-fighting agents. Class D fires require special extinguishing agents, often dry powder, that can smother the burning metals without reacting adversely.

In contrast, Class A fires typically involve ordinary combustibles like wood and paper, Class B fires are associated with flammable liquids, and Class C fires involve electrical equipment. Each class of fire has distinct characteristics based on the materials involved, which determine the appropriate extinguishing methods and precautions necessary to combat them effectively. Understanding these classifications is crucial for safety protocols and effective fire response in aviation and other fields where hazardous materials are present.