My original response seems to have disappeared, so I'll try again.

AFPD does not have an internal mechanism to import aircraft.

As a result aircraft designers had to resort to telling people HOW and WHERE to place the files.

Since many people are not skilled computer users, this created many problems for people.
To get around that, many aircraft designers started using separate second party "installer" programs, which is what those Executrable files are.

The installer programs try to put the unpacked files into the proper places.

However, these installers were created by END USERS not by Ipacs.

So the installers expect Aerofly to be installed where the installer expects.

All too often the plane creator is from another country. The installation paths differ, and the installers fail to put the planes in the correct location, or to even recognize that Aerofly is installed.

With these programs In most cases you are given the option if selecting the target folder, so you will have to point the installer program to the correct Aerofly folder... normally C:\Program Files\Ipac\Aerofly Deluxe Pro.