Issue:
I am unable to craft many of the upgrades for the Immersive Aircraft mod in Survival Mode. The list of upgrades incudes:

• Enhanced Propeller
• Eco Engine
• Nether Engine
• Industrial Gears
• Improved Landing Gear

To reproduce:

• Open REI
• Search for @immersive
• Click on any of the above mentioned items
  Notice a recipe does not appear when clicking the items. I've also tracked down the recipes and have attempted to create them in the crafting table manually. This also does not work.

Create Astral version:
2.0.5b

Immersive Aircraft version:
0.5.2+1.18.2

Other Information:
I've tested in Creative Mode and can successfully use these items. This appears to only be an issue in Survival Mode.

Intentional by @Laskyyy

Ah, I guess we can close this issue then. Thanks for your quick response. I'm curious, do you know why they decided to disable these?

I don't recall the reasoning, but if it's wanted I can introduce them again!

That would be great! I'm a big fan of aviation in real life and couldn't believe there were airplanes in this modpack, so I jumped all over that 😁 Thanks!

Have you added them back. I spent quite a bit trying to understand if they appeared on loot chests or something. They should at least have a note saying "DISABLED".
Would love for them to be enabled though, the planes are a good compromise while you still dont have an elytra early on