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

Ethylene glycol and isopropyl alcohol is the correct answer because this mixture is commonly used as deicing fluid in aviation. This mixture has a low freezing point and can effectively remove frost from aircraft surfaces without causing damage to the aircraft or posing a safety risk. Water and salt, vinegar and water, and pure alcohol are not typically used as deicing fluids in aviation due to various reasons such as ineffectiveness, corrosion potential, or safety concerns.