A question from one who has not yet done any FF training with TAAATS (not even sure of there is going to be any?):
I you are handling several FF aircraft, and even if they are issued discrete SSR using the RADTAG function, what HMI indication do you have if the aircraft dissappears from radar coverage? Actually that is a rhetorical question because I knwo the answer - none! Except if the TAGLIST window is open there will be a lost of the tracks with allocated SSR codes.
My point being, with Flight Following how does one manage their SAR responsibilities?
Ask yourself this: What is the difference in HMI presentation between an aircraft losing a radar return due to a gap in the radar coverage and flying in to the ground? (in the RADTAG environment).
The FDR environment has some back up in this scenario - RADTAGS do not, even though they are a lot quicker when the pilot has not filed a plan.