Quote from: Liming Lu on May 15, 2021, 12:48:31 AM

By the way, are there special frequency for PRM approaches in real operation?
(For example, I noticed when ILS 9L with PRM, crews need to monitor 32.55 but it seems not approach controllers' frequency?)

Are there controllers only monitor traffic on final (or they need to work on 2 frequencies and work for arrival traffic and monitor traffic on final at the same time)?

Looking at the KATL ILS PRM RWY 9L approach, the pilot would initially contact Atlanta Approach on 127.90 (or perhaps another frequency - there are often several in use, and the one listed isn't always the one you'll get). Probably at least one frequency change later, another Atlanta Approach controller will give you the approach clearance. Everything is "normal" up to this point.

Once you're cleared for the approach, you'll hear "Contact Atlanta Tower on 123.85". When you make the switch, you use COM1 to talk to Tower on 123.85 and get a landing clearance. You also need to listen to the PRM monitor frequency of 132.55 on COM2. In the event of a breakout or any other instruction, that will come from a dedicated approach controller working on 132.55 whose only job it is to monitor the parallel aircraft to ensure each is following the approach and the spacing works as it should.