In aluminum airframes, corrosion prevention aims to do what?

• A. Improve paint appearance.
• B. Prevent oxidation, preserve structural integrity, and extend service life.
• C. Increase weight.
• D. Reduce fuel efficiency.

Answer: (B)

Corrosion prevention for aluminum airframes is about stopping oxidation in a way that preserves the metal’s strength and life. Aluminum does form an oxide layer, which helps protection, but moisture, salt, and contact with different metals can drive corrosive processes like pitting or galvanic corrosion. By preventing those reactions, you keep the airframe’s structural integrity intact and extend its service life. That’s the core purpose of corrosion control: protect the structure and safety over time. While coatings can improve appearance, and unnecessary weight or reduced efficiency would be negative side effects, they’re not the goal of corrosion prevention.