Which Cat indicates extensive corrosion or coating damage repair above organizational level?

• A. Cat 1
• B. Cat 4
• C. Cat 2
• D. Cat 3

Answer: (D)

Understanding how corrosion repair categories are used helps you see why this choice fits. The categories define how widespread the damage is and who has the authority and capability to perform the repair. Repairs that are described as needing to be done above the organizational level signal that the damage is extensive and cannot be handled at the local unit with routine methods. They require higher-level maintenance facilities, additional oversight, or specialized procedures.

This option matches that scenario: it describes extensive corrosion or coating damage and the need for repairs beyond the local organizational level, which is exactly the situation that triggers escalation to a higher maintenance level. The other descriptions refer to less severe damage that can be managed locally or at lower maintenance levels, and therefore do not indicate the need for higher-level intervention.