> For the complete documentation index, see [llms.txt](https://docs.auterion.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.auterion.com/release-notes/auterion-mission-control-release-notes/amc-1.18/amc-1.18.3-1.md).

# AMC 1.18.3-1

## Compatibility

Please use the following Auterion OS version, or newer, with this AMC release:

{% content-ref url="/pages/iSJVkAYIoRWUlyXKi2IZ" %}
[AOS 2.10.2](/release-notes/auterionos/aos-for-skynode/aos-2.10/aos-2.10.2.md)
{% endcontent-ref %}

## What's new

* New terrain elevation data model hosted by Auterion. The terrain model used in all previous AMC versions won't be functional starting on June 22, 2023. The service will be discontinued and won't be active anymore. The new service is based on a different dataset such that users will benefit from increased accuracy and greater global coverage.


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