This action updates five latitude/longitude points in the description of the East-West Corridor of the Valparaiso, Florida Terminal Area. The changes are needed to reconcile the coordinates of U.S. maritime limits described in the Valparaiso Terminal Area description with those maritime limits published by the National Oceanic and Atmospheric Administration (NOAA) pursuant to its statutory authority. The FAA has developed these revised coordinates using updated digital data that more precisely define maritime limits and other geophysical features used in the boundary descriptions. This action is administrative and does not make substantive changes to the Valparaiso, Florida Terminal Area.