FAA AMT (Aviation Maintenance Technician) Airframe Practice Exam

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Prepare for the FAA AMT Airframe Exam with our comprehensive quiz. This resource offers multiple-choice questions designed to enhance your knowledge and understanding of aviation maintenance concepts.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What should be the included angle of a twist drill for soft metals?

118°
100°
90°
80°

The correct answer is: 90°

The included angle of a twist drill for soft metals should be 90°, which is option C. This is because soft metals are typically malleable and require a sharper point for drilling, compared to harder metals. Options A and B (118° and 100°) are commonly used for drilling harder materials, such as steel. Option D (80°) is not suitable for drilling soft metals as it is too sharp and may cause the metal to deform or break. Therefore, option C is the most appropriate and accurate answer for this question.