What does the margin information section of an IAP Chart depict?

The margin information section of an Instrument Approach Procedure (IAP) chart is designed to provide essential details regarding the airport's location and the identification of the specific approach procedure being utilized. This section typically includes the airport's name and identifier, which helps pilots easily associate the chart with the correct airport and its respective approach procedures.

While approach procedures and their altitudes, runway lights, navigation aids, and minimum safe altitudes are critical components of an IAP, these details are generally presented in other sections of the chart. The margin information is focused specifically on the basic identifiers and geographic context necessary for pilots to understand which airport they are approaching and confirm that they are referring to the correct IAP for that airport. This context ensures clear and effective communication for safety and navigation in the air traffic control environment.