Prepar3D does not install simconnect by default.
This aircraft uses simconnect and if it is not available parts may fail to display correctly

If simconnect is not installed then You need to Install the Simconnect.dll that is in the Prepar3d/redist/interface/fsx-sp2-xpack/retail/lib folder.

They can also be downloaded here:

https://support.justflight.com/support/solutions/articles/17000100065-simconnect-files-for-fsx-p3d