50 x 20 inches folded to 5 x 10 inches. Charts revised every 56 days.
Area charts show congested terminal areas at a large scale.
55 x 20 inches folded to 5 x 10 inches. Revised every 56 days. A Change Notice is published at the midpoint between revisions in bound volume format. IAP charts portray the aeronautical data that is required to execute instrument approaches to airports. Each chart depicts the IAP, all related navigation data, communications information, and an airport sketch.