FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

Fiberglass used in aircraft structures requires high tensile strength due to the high stress and force that aircrafts experience during flight. The modulus (A), or the measure of stiffness, is important in determining the strength of a material but does not directly address tensile strength. Resistance (B) is a measure of how well a material can withstand damage or deformation, but it is not specific to tensile strength. Tensile (D) is a common term for the amount of stretching or pulling a material can withstand before breaking, but it is not specific to the material's strength. Therefore, the correct option is C S - strength, as it directly refers to the material's ability to withstand tension and force.