To replace the standard Immersive Aircrafts visuals with Create-styled metals, blocks, and gears, the resource pack must be active and prioritized properly in your client settings.
Activating the Resource Pack
1. Pause the game or start from the main title screen, then open Options and select Resource Packs.
2. Look in the Available column on the left for the Create Immersive Aircrafts Resource Pack.
3. Hover over the pack icon and click the right-facing arrow to move it into the Selected column.
Setting Load Priority
Resource packs load from bottom to top, meaning packs higher on the Selected list overwrite anything beneath them.
1. Check where the built-in Mod Resources entry sits in your Selected column.
2. Use the up arrow on the Create Immersive Aircrafts Resource Pack so it sits above Mod Resources and any general overhaul packs that might also touch modded items.
3.
Once reloaded, any placed flying machines, attached aircraft weapons, and inventory crafting parts will immediately display their updated mechanical textures without needing to restart the game or rebuild your existing vehicles.