FAA AMT Airframe Test 2026 – 400 Free Practice Questions to Pass the Exam

When faced with an aircraft brake fire, it is essential to use a fire extinguisher that is specifically designed for use on burning metals, such as the dry powder chemical extinguisher. Dry powder chemical extinguishers are effective in suppressing fires involving combustible metals like those found in aircraft brakes. This type of extinguisher works by forming a crust over the fire, eliminating the oxygen supply, and thus extinguishing the flames.

Option A, foam extinguishers, are generally more suited for Class A fires involving ordinary combustible materials like wood or paper. Option B, water extinguishers, are effective for Class A fires but can be dangerous if used on Class B (flammable liquids) or Class C (electrical) fires, as they can spread the fire or pose electric shock hazards. Option C, carbon dioxide extinguishers, are more suitable for electrical fires (Class C) as they do not leave residue and do not damage sensitive equipment, but they may not be as effective for metal fires like those involving aircraft brakes.