2 × Slimeball + 3 × Gold Ingot + Engine + 3 × Brick → Eco Engine
No recipe of Immersive Aircraft 1.6.0+1.21.1 uses Eco Engine.
Textures, models and item names © Luke100000 and the Immersive Aircraft contributors.
Recipes, names and numbers are read from the mod files of Immersive Aircraft 1.6.0+1.21.1 for Minecraft 1.21.1 (NeoForge). Not affiliated with the mod authors, Mojang or Microsoft.