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Aviation Maintenance Technician Handbook–General

FAA-H-8083-30B Version 2023
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Chapter 10

Inspection Concepts & Techniques

A bad weld has irregular edges and considerable variation in the depth of penetration. It often has the appearance of a cold weld.

Figure 10-38. Examples of poor welds: too rapidly (A), improper penetration and cold laps (B), and irregular edges and considerable variation (C).
Figure 10-38. Examples of poor welds: too rapidly (A), improper penetration and cold laps (B), and irregular edges and considerable variation (C).

netration and cold laps (B), and irregular edges and considerable epth of bead.

Figure 10-39. Butt weld (A) and fillet weld (B), showing width and depth of bead.
Figure 10-39. Butt weld (A) and fillet weld (B), showing width and depth of bead.