SACAA AME Airframes Practice Questions - SACAA Aircraft Maintenance Engineer Airframes General (CAT A B) Theoretical Knowledge Examination Exam

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Why is high-strength 7075-T6 aluminum alloy frequently clad with pure aluminum (Alclad 7075) when used for external fuselage skins?

To increase the overall tensile strength and fatigue limit of the sheet material. To provide cathodic galvanic corrosion protection over the core alloy susceptible to intergranular corrosion. To improve thermal conductivity during high-speed atmospheric friction. To allow easier spot-welding without removing surface oxide layers.

Correct Answer:

To provide cathodic galvanic corrosion protection over the core alloy susceptible to intergranular corrosion.

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