Which symbol indicates an unsatisfactory condition exists?

• A. Red X
• B. Red Dash
• C. Red Diagonal
• D. Blue Bark

Answer: (C)

In status indicators, a red diagonal line across the symbol is designed to signal a nonconforming or unsatisfactory condition that needs action. The diagonal slash cuts through normal status markings and is instantly recognizable as a warning flag that something doesn’t meet standards and must be addressed before the item can be considered serviceable. The other marks either convey different meanings or aren’t standard for signaling unsatisfactory condition, and the blue symbol isn’t used for this purpose at all.