CDC Low Observable Aircraft Structural Maintenance (AFSC 2A755) Volume 3 Practice Exam 2026 - Free Practice Questions and Study Guide

The recommended approach for scraping LO (Low Observable) coatings around the edge of a panel is to start from an interior point and work your way to the edges. This method is preferred because it minimizes the risk of damaging the panel's surface and the surrounding area. By beginning at an interior location, any inadvertent scratching or removal of coating is handled away from critical edges, which can impact performance or structural integrity. This technique helps maintain the optimal functionality of the coatings while ensuring a cleaner finish at the edges, where precision is most crucial.

The other methods, such as scraping from the edges inward or from the bottom to the top, could lead to uneven removal of the coating, increased risk of damage to the actual panel surface, or compromised edge integrity. Scraping randomly across the surface fails to follow a structured method, which could lead to inconsistent results and possible performance failures of the low observable properties.