The image is a close-up of a clear plastic plaque with a black background. The plaque is rectangular in shape and has a white border. On the top right corner of the plaque, there is a detailed drawing of a circuit board with various components labeled. Below the drawing, there are two lines of text that appear to be instructions or diagrams. The text on the plaque reads "Modifications not approved" and "Other equipment not shown in plane". The plaque appears to be mounted on a wooden surface.