Hello, there appears to be a bug with the Helicopter recipe in the plane workbench. Crafting a helicopter requires 2 propellers but will only consume one on craft.

Versions:
Minecraft 1.18.2
Forge 40.1.52
Simple Planes simpleplanes-1.18.2-4.13.4.jar
Modpack FTB Plexiglass Mountain 1.1.1

Screenshots:
What is in JEI

Putting materials in

Taking the Helicopter while crafting completes, one propeller remains

Thanks in advance for checking it out!

Thanks for reporting!