Plain English Meaning
A spider-web pattern of tiny surface cracks on a plastic windshield or window. The plastic is starting to break down, making it harder to see through and weaker than it should be.
Full Definition
A network of fine, hairline cracks that develops on the surface of transparent plastic materials such as aircraft windshields and side windows, caused by age, exposure to sunlight, temperature changes, chemical contact, or stress. Crazing degrades optical clarity and can weaken the panel.
Context Anchor
Seen during the visual preflight inspection, especially when checking the windshield, side windows, and other clear panels for safe visibility and condition.