Guidance · AIMAIM effective July 9, 2026
AIM 2-3-12 Information Signs
Chapter 2. Aeronautical Lighting and Other Airport Visual Aids · Section 3. Airport Marking Aids and Signs
A reference copy of the official AIM text for study. It is not legal advice or an FAA interpretation; always confirm against the current official source.
Information signs have a yellow background with a black inscription. They are used to provide the pilot with information on such things as areas that cannot be seen from the control tower, applicable radio frequencies, and noise abatement procedures. The airport operator determines the need, size, and location for these signs.
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