> 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/flight-control/apx4-3.4.md).

# APX4 3.4

APX4 3.4 is based on the open-source PX4 release v1.17.0. See [here](https://docs.px4.io/main/en/releases/1.17.html) for detailed release notes for v1.17.0