I download immersive_aircraft-0.3.0+1.19.2-fabric in my computer and met a strange bug:
Everytime I destroy Quadrocopter it will drop Gyrodyne rather than Quadrocopter, both in creative and survival mode. I tried to disabled all others mods except fabric-api-0.72.0+1.19.2 which is indispensable fo this mod. And it turns to the same result. So I think it is a bug.
My game version is 1.19.2 and I install fabric 0.14.12 to manage mods. English is not my mother tongue. Please forgive potential grammar and spelling errors

This bug had already been fixed in 438f21b on on Jan 26, 2023. And it is my fault to commit an issue without check lastest update.