FAA AMT Airframe Practice Exam 2026 – All-in-One Study Guide to Master Aviation Maintenance Technician Certification!

Question: 1 / 1030

What is the smallest size cable that may be used in aircraft primary control systems?

1/16 inch

1/8 inch

In aircraft primary control systems, the smallest size cable that may be used is typically 1/8 inch. This size provides the necessary strength and reliability required for primary flight control operations. Larger sizes like 3/16 inch or 1/4 inch would be excessive for most control system applications, adding unnecessary weight and complexity. Smaller options like 1/16 inch may be too light-duty and could compromise the safety and effectiveness of the control system. Therefore, 1/8 inch is the most suitable and commonly used size for aircraft primary control systems.

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3/16 inch

1/4 inch

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