What is the purpose of a sketch of a repair?

• A. It shows the full assembly with tolerances.
• B. It shows a specific bit of information and includes the minimum amount of detail needed to manufacture a part.
• C. It documents the maintenance history.
• D. It shows the fuel system diagram.

Answer: (B)

A repair sketch is meant to convey just the essential details needed to perform or manufacture the repair. It focuses on a specific feature or patch and includes the minimum information necessary to produce the repaired part or apply the fix—things like the shape, location, exact dimensions, any required hole patterns, clearances, material, finish, and any notes about how the repair should be made. This keeps the guidance precise and actionable without overloading it with unrelated data.

For example, if you’re adding a patch or doubler, the sketch would show where the repair goes, the exact size and shape of the patch, edge distances, hole locations, fastener type, thickness, and any finish requirements. It’s not meant to depict the entire assembly with tolerances, nor to document maintenance history, nor to illustrate a system diagram like fuel lines. Those latter items belong in other drawings or records, not in a repair sketch.