Cat 4 indicates what for the asset?

• A. No repairs needed.
• B. Asset requires extensive corrosion, coating damage, and/or metal repair work above organizational level. Metal is unsound.
• C. Spot painting only.
• D. Minor maintenance at organizational level.

Answer: (B)

Cat 4 means the asset is in a condition that requires major work beyond what a local organizational maintenance team can handle; the metal is unsound. In corrosion control, this level signals severe deterioration such as extensive corrosion, coating damage, or structural metal repair that cannot be completed at the organizational level. Repair would typically require higher-level shop work (depot or contractor) or even replacement. This is why the best description is extensive corrosion and/or coating damage with metal unsound, needing work above organizational level. The other options describe minor or no action, which do not fit a Cat 4 condition.