What is the smallest diameter allowed in a primary control system cable?

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Prepare for the ASA Aviation Maintenance Technician General Test. Utilize flashcards and multiple-choice questions with hints and explanations. Ace your exam!

Multiple Choice

What is the smallest diameter allowed in a primary control system cable?

Explanation:
Primary control cables must provide reliable strength and endure fatigue under pilot input and aerodynamic loads, so there’s a defined minimum diameter to ensure adequate performance. The smallest diameter allowed for a primary control cable is 1/8 inch. Using a smaller cable, such as 3/32 inch, would reduce tensile strength and make the cable more prone to wear, stretch, and failure, compromising control effectiveness and safety. Larger diameters like 3/16 or 1/4 inch are possible when higher loads are involved, but they are not the minimum requirement; the question asks for the smallest permissible size, which is 1/8 inch.

Primary control cables must provide reliable strength and endure fatigue under pilot input and aerodynamic loads, so there’s a defined minimum diameter to ensure adequate performance. The smallest diameter allowed for a primary control cable is 1/8 inch. Using a smaller cable, such as 3/32 inch, would reduce tensile strength and make the cable more prone to wear, stretch, and failure, compromising control effectiveness and safety. Larger diameters like 3/16 or 1/4 inch are possible when higher loads are involved, but they are not the minimum requirement; the question asks for the smallest permissible size, which is 1/8 inch.

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