tgorgolione parent
What's interesting about this is that they are using Microsoft's Flight Simulator X's codebase, and I think plugins that work in FSX will work in Prepar3D.
Until Prepar3D version 3 it was somewhat true. Since V4 it is 64-bit and it broke the compatibility with most older plug-ins.
It's veeeeery hit and miss as to if an FSX add-on will work with P3D. One reason is that FSX is 32-bit only whereas P3D is 64-bit as of v4 - they've changed a lot of stuff.