Scenery developer 29Palms has updated their version of Twentynine Palms Airport to version 1.17. Although a relatively old product for the developer, the new update brings in additional features including new animated people and static aircraft. There were also some improvements with compatibility with various terrain mesh which is available for simmers to enjoy.
To get the update, you can apply it through the 29Palms scenery configuration tool, or just download a complete new build from your store of purchase.
The information can be found on the 29Palms Facebook page.