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A Helicopter Route Raster Chart is a raster image of an FAA Helicopter Route Chart. All information that is part of the paper Helicopter Route Chart is included in the raster image. The image inside the neat line is georeferenced to the surface of the earth. Georeferencing information for graphics should be disregarded. The raster data may be viewed using a geographical information system to take advantage of the georeferenced nature of the data or the data can be viewed using commonly available image viewing software.","dc_publisher":"Federal Aviation Administration, Mission Support Services, Aeronautical Information Services","dc_rights":"Access constraints: None; Use constraints: Caution: These charts are primarily designed for VFR navigational purposes and do not purport to indicate the presence of all power transmission and telecommunications lines, terrain, or obstacles which may be encountered below reasonable and safe altitudes. Note: DoD users, refer to current DoD (NGA) charts and flight information publications for information outside of U.S. airspace. Airspace classification and operational requirements may differ between Mexico and the United States (DoD users, see DoD Area Planning AP/1). Note: Refer to current Canadian charts and flight information publications for information within Canadian Airspace. Airspace classification (see Canada Flight Supplement) and operational requirements (DoD users, see DoD Area Planning AP/1) may differ between Canada and the United States. Consult Notices to Airmen (NOTAMs) for latest changes.","dc_format":"GeoTIFF","source_width":11987,"source_height":8989,"source_band_count":1,"source_crs":"PROJCS[\"Lambert Conformal Conic\",GEOGCS[\"NAD83\",DATUM[\"North_American_Datum_1983\",SPHEROID[\"GRS 1980\",6378137,298.257222101004,AUTHORITY[\"EPSG\",\"7019\"]],AUTHORITY[\"EPSG\",\"6269\"]],PRIMEM[\"Greenwich\",0],UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"4269\"]],PROJECTION[\"Lambert_Conformal_Conic_2SP\"],PARAMETER[\"latitude_of_origin\",34],PARAMETER[\"central_meridian\",-118.625],PARAMETER[\"standard_parallel_1\",45],PARAMETER[\"standard_parallel_2\",33],PARAMETER[\"false_easting\",0],PARAMETER[\"false_northing\",0],UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH]]"},"assets":[{"id":"cb8ef74f-d83c-4353-9539-c3479579e0f8","chart_id":"cb2f5e52-976a-4f39-8bd1-fbf3ddecc1e1","source_artifact_id":"8bbe2488-f617-4667-9d70-5b8f4bb8ab0a","asset_kind":"geotiff","filename":"Los Angeles West HEL.tif","relative_path":"extracted/2026-03-19/vfr_helicopter/helicopter/Los Angeles West HEL.tif","media_type":"image/tiff","status":"ready","file_size_bytes":19653000,"checksum_sha256":"486056974ec54a2598f167dae1ca6b21e812d852b8876073c373cc1aa8132a62","metadata_json":{"region":"Los Angeles West","asset_role":"geotiff"},"content_url":"/api/v1/chart-assets/cb8ef74f-d83c-4353-9539-c3479579e0f8/content"},{"id":"b2881b51-a3b2-4e88-bf10-d30b0f018817","chart_id":"cb2f5e52-976a-4f39-8bd1-fbf3ddecc1e1","source_artifact_id":"8bbe2488-f617-4667-9d70-5b8f4bb8ab0a","asset_kind":"metadata_html","filename":"Los Angeles West HEL.htm","relative_path":"extracted/2026-03-19/vfr_helicopter/helicopter/Los Angeles West HEL.htm","media_type":"text/html","status":"ready","file_size_bytes":20216,"checksum_sha256":null,"metadata_json":{"region":"Los Angeles West","asset_role":"metadata_html"},"content_url":"/api/v1/chart-assets/b2881b51-a3b2-4e88-bf10-d30b0f018817/content"},{"id":"20c47174-f605-4990-9771-4d8083b544b5","chart_id":"cb2f5e52-976a-4f39-8bd1-fbf3ddecc1e1","source_artifact_id":"8bbe2488-f617-4667-9d70-5b8f4bb8ab0a","asset_kind":"world_file","filename":"Los Angeles West HEL.tfw","relative_path":"extracted/2026-03-19/vfr_helicopter/helicopter/Los Angeles West HEL.tfw","media_type":"text/plain","status":"ready","file_size_bytes":90,"checksum_sha256":null,"metadata_json":{"region":"Los Angeles West","asset_role":"world_file"},"content_url":"/api/v1/chart-assets/20c47174-f605-4990-9771-4d8083b544b5/content"}]}