Problem, the zoom keyboard keys are not working on P3D v5. in The Prepar3d Forum Posted July 21, 2020 I don't know if it was something I did or if it is something with the install. When I first got P3D v5 the keyboard keys for zoom, -,= were working and now they are not. I have chaseplane could that be interferring with it? Anyway, I like to use the A2A C172 for GA flying and that's what I learned simming on.