Which of the following is a consequence of "burn through" during coating application?

The consequence of "burn through" during coating application primarily results in visible imperfections on the coated surface. When the coating is improperly applied or subjected to excessive heat during the curing process, it can lead to areas where the substrate is exposed due to the failure of the coating. This exposure creates a distinctive visual flaw on the surface, which can disrupt the aesthetic and functional properties of the aircraft.

Visible imperfections can not only affect the overall appearance of the aircraft but can also compromise its low observable characteristics. Low observable aircraft are designed to have surfaces that effectively reflect or absorb radar waves, and any irregularities can lead to increased radar signatures. While the presence of visible imperfections may indirectly indicate other potential issues, the direct consequence is the visible alteration of the surface itself.