Explanation of Changes

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to the Office of Primary Interest (OPI)

1. Editorial Changes

   Editorial change includes a universal editorial change to terms from the National Aeronautical Charting office to FAA's Aeronautical Information Services (AIS) to paragraph 7-1-4, Publication of Installation. Also, the removal of the National Flight Data Center (NFDC) for its replacement AIS, and the term AeroNav Products is removed for the term AIS.

2. Entire Publication

   Additional editorial/format changes were made where necessary. Revision bars were not used because of the insignificant nature of these changes.