> For the complete documentation index, see [llms.txt](https://docs.aviowiki.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.aviowiki.com/open-data/definition.md).

# Definition

The following properties are defined as "*Open Data*" regardless of how they are retrieved.

For example, if you are a customer paying for our premium data, using the following properties will fall under the license of Open Data.

<table data-header-hidden><thead><tr><th>Property</th><th width="229.33333333333331">Type</th><th>Description</th></tr></thead><tbody><tr><td><strong>Property</strong></td><td><strong>Type</strong></td><td><strong>Description</strong></td></tr><tr><td><code>aid</code></td><td>string</td><td>A string with the AID of the airport, with <code>APT</code> as namespace</td></tr><tr><td><code>icao</code></td><td>string, <code>null</code></td><td>A string with the 4-letters <a href="https://en.wikipedia.org/wiki/ICAO_airport_code">ICAO code</a> of the airport, or<code>null</code> if none is assigned</td></tr><tr><td><code>iata</code></td><td>string, <code>null</code></td><td>A string with the 3-letters <a href="https://en.wikipedia.org/wiki/IATA_airport_code">IATA code</a> of the airport, or <code>null</code> if none is assigned.</td></tr><tr><td><code>faa</code></td><td>string, <code>null</code></td><td>A string with the <a href="https://en.wikipedia.org/wiki/Location_identifier#FAA_identifier">FAA code</a>, or <code>null</code> if none is assigned.</td></tr><tr><td><code>coordinates</code></td><td>object, <code>null</code></td><td>A Coordinates object which represents the location of the <a href="https://en.wikipedia.org/wiki/Airport_reference_point">Aerodrome Reference Point</a>.<br>This is <code>null</code> when the information is not known.</td></tr><tr><td><code>country</code></td><td>object, <code>null</code></td><td>A Country object which represents the country at which an airport is located.<br><code>null</code> if this is not known.</td></tr><tr><td><code>timeZone</code></td><td>string, <code>null</code></td><td>The timezone of the airfield as noted in the <a href="https://en.wikipedia.org/wiki/Tz_database">IANA Time Zone Database</a>.<br><code>null</code> indicates that this information is not available.</td></tr><tr><td><code>name</code></td><td>string, <code>null</code></td><td>The name of the airport. This should be the official name of the airport written in Latin characters.</td></tr><tr><td><code>servedCity</code></td><td>string, <code>null</code></td><td>A string containing the name of the city served by the airport. In some countries, like the USA, this includes the state. For example: <code>Los Angeles, CA</code>.<br>This is <code>null</code> when the information is not known.</td></tr></tbody></table>