What is necessary for surface treatment when corrosion or microbial attack is present?

Surface treatment is crucial when corrosion or microbial attack is detected because it directly addresses the integrity of the material. Removing paint and surface coatings can expose the underlying material to a thorough inspection, allowing for the identification of the extent of corrosion or damage. This step is necessary to effectively treat the affected areas, as it ensures that any corrosion is fully addressed and prevents further degradation.

If coatings are left in place, they might conceal the extent of the damage, leading to insufficient repair or treatment. After removal, proper cleaning, repairing, and possibly re-applying protective surfaces can help restore the material's integrity and ensure that it is safeguarded against future corrosion or microbial growth. This proactive approach is a foundational aspect of corrosion control in avionics, as maintaining the surface condition is essential for the overall reliability and safety of aircraft systems.