The only place you will find PAR is at military bases. Today you will find most airfields have ILS and GPS approaches that are considered precision approaches so the need for the old style radar is not needed. In fact these days the microware landing approaches are more precise then ILS. While I was a controller in the Air Force for 9 years, I was a novice GCA/PAR controller, I spent most of my time as a Tower or Center controller. Also spent 6 years ass FAA controller and 3 years as an instructor, so I can field questions on this subject. Of note, Arthur C Clark (author of 2001: A Space Odyssey) wrote about his time during WWII as a GCA controller in his book Glideslope. GCA is ground approach radar unit, a combination of a regular radar scope and usually two paired PAR scopes ( one vertical and other horizonal),