Homeland Infrastructure Foundation Level Data HIFLDAirspace Boundaries shown on the United States, Puerto Rico, and Virgin Islands' aeronautical charts. The Airspace Boundary data is provided as a vector geospatial-enabled file format. Airspace Boundary data is published every eight weeks by the U.S. Department of Transportation, Federal Aviation Administration-Aeronautical Information Services. Current Effective Date: 0901Z 16 May 2024 to 0901Z 11 Jul 2024.FileengPennsylvania Spatial Data Access (PASDA)PublicAirspace Boundaries [Pennsylvania]DatasetsPennsylvania