
Each aircraft in FSX can be equipped up to 9 different panels, and each of these panels can be called up by pressing the [SHIFT] plus a number key from 1 to 9. However, only a few aircrafts in FSX are actually equipped with all 9 panels. Most aircrafts use less than five.
The following tweak adds the radar panel found in control tower to virtually any aircraft.

Don’t remember where I found this tweak in the first place (credit should be given to the one who shared this). It is an interesting and useful one and quite easy to implement. Furthermore, I had it simplified.
Here’s how to add the radar to the Cessna 172 as an example. Same procedures apply to all other planes:


