First , this advanced model is not simple to use.
Just install just drops to the backup animation mode which only supports minimum animations.
How to install:
1.Copy the Model file (MDL) to the already installed aircraft.
2.Copy the texture file to the the already installed aircraft's texture folder.
If asked overwrite , just choose no.
3.Copy the Lightmaps if missing ... just for making sure.
4.Copy the Pky_util and Posky737 folder to the panel folder of the already installed aircraft.
5. THIS IS IMPORTANT
Needs to edit the panel.cfg of the aircraft.
Add lines under to the panel.cfg
Those guages control the animations.