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Airports of the United States, Puerto Rico and the U.S. Virgin Islands

Airports of the United States, Puerto Rico and the U.S. Virgin Islands

Metadata also available as - [Outline] - [Parseable text] - [XML] - [DIF]

Frequently-anticipated questions:


What does this data set describe?

Title:
Airports of the United States, Puerto Rico and the U.S. Virgin Islands
Abstract:
This data set includes airports in the United States, Puerto Rico and the U.S. Virgin Islands. The data were derived from an extract of The Public- Use Airports database of the National Transportation Atlas Databases-2001 (NTAD-2001), published by the Bureau of Transportation Statistics, Department of Transportation.
  1. How should this data set be cited?

    U.S. Geological Survey, 200110, Airports of the United States, Puerto Rico and the U.S. Virgin Islands: U.S. Geological Survey, Reston, Virginia.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: 170
    East_Bounding_Coordinate: -64
    North_Bounding_Coordinate: 72
    South_Bounding_Coordinate: 17

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: Oct-2001
    Currentness_Reference: publication date

  5. What is the general form of this data set?

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      Indirect_Spatial_Reference:
      U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the Outlying Areas of The United States, and Associated Areas (Federal Information Processing Standard (FIPS) 5-2): Washington, DC, National Institute of Standards and Technology.

      U.S. Department of Commerce, 1990, Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas (FIPS 6-4): Washington, DC, National Institute of Standards and Technology.

      This is a Vector data set. It contains the following vector data types (SDTS terminology):
      • Point (901)

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000278. Longitudes are given to the nearest 0.000278. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is GRS1980.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.257222.

  7. How does the data set describe geographic features?

    Airports (described by airprtx020.dbf)
    An area where aircraft take off and land. (Source: U.S. Geological Survey)

    Shape
    The representation of the entity in the data. (Source: U.S. Geological Survey)

    ValueDefinition
    Point0-dimensional element

    Area
    The size of the shape in coverage units. (Source: U.S. Geological Survey)

    Range of values
    Minimum:0.000
    Maximum:0.000

    Perimeter
    The perimeter of the shape in coverage units. (Source: U.S. Geological Survey)

    Range of values
    Minimum:0.000
    Maximum:0.000

    Airprtx020
    Internal feature number. (Source: U.S. Geological Survey)

    Range of values
    Minimum:1
    Maximum:901

    Locid
    Unique 3-4 character identifier assigned to the landing facility. (Source: Federal Aviation Administration)

    Formal codeset
    Codeset Name:Air Carrier Activity Information System (ACAIS)
    Codeset Source:U.S. Department of Transportation, Federal Aviation Administration

    Feature
    The type of landing facility. (Source: National Transportation Atlas Databases-2000, Bureau of Transportation Statistics)

    ValueDefinition
    AirportAn area where aircraft can take off and land, usually equipped with associated buildings and facilities, and used primarily by conventional, fixed-wing aircraft.
    HeliportAn area where aircraft can take off and land, usually equipped with associated buildings and facilities, and used primarily by rotary- wing aircraft.
    Seaplane BaseAn area where aircraft can take off and land, usually equipped with associated buildings and facilities, and used primarily by seaplanes.

    Name
    Name or identification for the airport. (Source: Federal Aviation Administration)

    Formal codeset
    Codeset Name:Air Carrier Activity Information System (ACAIS)
    Codeset Source:U.S. Department of Transportation, Federal Aviation Administration

    Tot_enp
    The total enplanements during calendar year 2000 (the sum of large certified, commuter, air taxi, foreign, and in-transit enplanements). (Source: Air Carrier Activity Information System, Federal Aviation Administration)

    Range of values
    Minimum:250
    Maximum:38136866

    State
    The 2-character abbreviation for the name of the State in which the airport or landing facility is located. (Source: U.S. Geological Survey)

    Formal codeset
    Codeset Name:Codes for the Identification of the States, the District of Columbia and the Outlying Areas of the United States, and Associated Areas; FIPS 5-2.
    Codeset Source:U.S. Department of Commerce, Washington, DC, National Institute of Standards and Technology

    County
    The name of the county or county equivalent in which the airport or landing facility is located. (Source: U.S. Geological Survey)

    Formal codeset
    Codeset Name:Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas; FIPS 6-4
    Codeset Source:U.S. Department of Commerce, Washington, DC, National Institute of Standards and Technology

    Fips
    The 5-digit FIPS code of the county or county equivalent. (Source: U.S. Geological Survey)

    Formal codeset
    Codeset Name:Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas; FIPS 6-4
    Codeset Source:U.S. Department of Commerce, Washington, DC, National Institute of Standards and Technology

    State_fips
    The 2-digit FIPS code for the State in which the airport or landing facility is located. (Source: U.S. Geological Survey)

    Formal codeset
    Codeset Name:Codes for the Identification of the States, the District of Columbia and the Outlying Areas of the United States, and Associated Areas; FIPS 5-2.
    Codeset Source:U.S. Department of Commerce, Washington, DC, National Institute of Standards and Technology


Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

    • U.S. Geological Survey

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    Steve Kambly
    U.S. Geological Survey
    561 National Center
    Reston, VA 20192

    703-648-5094 (voice)
    skambly@usgs.gov


Why was the data set created?

These data are intended for geographic display and analysis at the national level, and for large regional areas. The data should be displayed and analyzed at scales appropriate for 1:2,000,000-scale data. No responsibility is assumed by the U.S. Geological Survey in the use of these data.


How was the data set created?

  1. From what previous works were the data drawn?

    NTAD97 (source 1 of 6)
    U.S. Department of Transportation (DOT), 1997, National Transportation Atlas Databases 1997 (NTAD97): Bureau of Transportation Statistics, DOT, Washington, DC.

    Type_of_Source_Media: CD-ROM
    Source_Contribution: spatial and attribute information

    NTAD-2001 (source 2 of 6)
    U.S. Department of Transportation (DOT), 2001, National Transportation Atlas Databases 2001 (NTAD-2001): Bureau of Transportation Statistics, DOT, Washington, DC.

    Type_of_Source_Media: CD-ROM
    Source_Contribution: spatial and attribute information

    ATLAS_AP98 (source 3 of 6)
    U.S. Geological Survey, 19980316, Airports of the U.S.: U.S. Geological Survey, Reston, VA.

    Type_of_Source_Media: online
    Source_Contribution: attribute information

    ACAIS (source 4 of 6)
    U.S. Department of Transportation (DOT), 2000, Extract from Air Carrier Activity Information System: Federal Aviation Administration, DOT, Washington, DC.

    Type_of_Source_Media: computer file
    Source_Contribution: spatial and attribute information

    ATLAS_AP99 (source 5 of 6)
    U.S. Geological Survey, 19990216, Airports of the United States, Puerto Rico and the U.S. Virgin Islands: U.S. Geological Survey, Reston, VA.

    Type_of_Source_Media: online
    Source_Contribution: spatial and attribute information

    ATLAS_COUNTY (source 6 of 6)
    U.S. Geological Survey, 200102, County Boundaries of the United States: U.S. Geological Survey, Reston, VA.

    Type_of_Source_Media: online
    Source_Contribution: spatial and attribute information

  2. How were the data generated, processed, and modified?

    Date: 1998 (process 1 of 3)
    Data from the NTAD97 CD-ROM were obtained from the Department of Transportation. Using the airport.pnt and airport.t01 files on the CD-ROM, airports with passenger enplanement of greater than or equal to 250 passengers per year were selected to create a point coverage to which the following attributes were attached: airport location identifier, name of airport, name of State, State FIPS code, Air Carrier Activity Information System airports, and Total Enplanement. The data were converted to shapefile format for use in National Atlas applications and for distribution to the public.

    Data sources used in this process:

    • NTAD97

    Data sources produced in this process:

    • ATLAS_AP98

    Date: 16-Feb-1999 (process 2 of 3)
    Airports for Puerto Rico and the U.S. Virgin Islands were added. Airport names were changed from all upper case and no period after initials to lower case and period after initials. For example, LYNDON B JOHNSON is now Lyndon B. Johnson.

    Data sources used in this process:

    • ATLAS_AP98

    Data sources produced in this process:

    • ATLAS_AP99

    Date: 05-Aug-2001 (process 3 of 3)
    ATLAS_AP99 was updated with enplanement data from NTAD-2001. Existing airports, heliports, and seaplane bases with enplanements of 250 or greater were kept in the data set, while those below 250 enplanements were deleted. Sixty-five airports, heliports, and seaplane bases that had 250 or greater enplanements were added. The following attributes were added to ATLAS_AP99: Feature, indicating the type of facility, name of County, and County FIPS code.

    Data sources used in this process:

    • ATLAS_AP99
    • NTAD-2001
    • ACAIS
    • ATLAS_COUNTY

  3. What similar or related data should the user be aware of?


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    This category includes airports in the 50 United States, Puerto Rico, and the U.S. Virgin Islands with enplanements greater than or equal to 250 passengers per year.

  5. How consistent are the relationships among the observations, including topology?

    No tests for logical consistency were performed on this data set.


How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints:
None. Acknowledgment of the National Atlas of the United States of America would be appreciated in products derived from these data.

  1. Who distributes the data set? (Distributor 1 of 1)

    Earth Science Information Center, U.S. Geological Survey
    507 National Center
    Reston, VA 20192

    1-888-ASK-USGS (1-888-275-8747) (voice)

    Contact_Instructions:
    In addition to the address above, there are other ESIC offices throughout the country. A full list of these offices is at <http://mapping.usgs.gov/esic/esic_index.html>.
  2. What's the catalog number I need to order this data set?

  3. What legal disclaimers am I supposed to read?

    Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made by the U.S. Geological Survey regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. No responsibility is assumed by the U.S. Geological Survey in the use of these data.

  4. How can I download or order the data?

    • Availability in digital form:

      Data format: ESRI Shapefile
      Network links: <http://nationalatlas.gov/atlasftp.html>

      Data format: SDTS
      Network links: <http://nationalatlas.gov/atlasftp.html>

    • Cost to order the data:

      There is no charge for the online option. For National Atlas files ordered on CD-ROM there is a base price of $45.00 per disc, a handling fee of $5.00, and a per-file charge based on file size. The charge for files less than 10 megabytes in size is $1.00. The charge for files that range in size from 10 to 150 megabytes is $7.50. The charge for files of 150 megabytes or larger is $15.00. The charge is $1.00 for the Airports of the United States, Puerto Rico and the U.S. Virgin Islands.

    • Special instructions:

      To order files on CD-ROM, please see <http://nationalatlas.gov/atlasftp.html#q12>


Who wrote the metadata?

Dates:
Last modified: 18-Oct-2001
Metadata author:
Peg Rawson
U.S. Geological Survey
521 National Center
Reston, VA 20192

703-648-4183 (voice)
atlasmail@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)



 


Generated by mp version 2.8.16 on Wed Mar 29 16:13:31 2006