What lettering size is used for the AFFF coaming?

The proper lettering size for AFFF (Aqueous Film-Forming Foam) coaming is 3-inch lettering. This size is specified to ensure clear visibility, which is critical for safety and immediate recognition during emergencies. The visibility of safety signage, such as AFFF coaming, is paramount in aviation environments where quick and efficient response is necessary to mitigate hazards like fires. Appropriate size helps personnel easily identify critical firefighting equipment quickly, especially under stressful conditions where every second counts. Proper signage dimensions are standardized to maintain consistency across various platforms and environments, thus enhancing operational readiness and safety awareness.