After having had a look at AirScan's map, here are some questions about the tracks.. I guess I am speaking more about the eastbound ones, but maybe similar for westbound...
Are there definite tracks, ones that sort of match certain distances offshore for example and start down at the Boston/Moncton boundary and continue right up to east of Newfoundland? For example if an aircraft comes into Moncton's airspace at BRADD, will it continue along more or less the middle of the sector right up to NICSO unless there is some reason to deviate? and in the same vein, does the next one out down there, KANNI, go with PORTI off Newfoundland.. again I mean for the most part...?? and so on.
Also in looking at the New Brunswick area, I am thinking that there is a boundary between 132.7 and 127.125. The aircraft going west from Halifax towards Central Canada always go to 127.125, "never" 132.7, as they cut across southwestern New Brunswick and then of course go to 128.05 Boston.. which brings up a similar question about Boston... Aircraft coming down from the northeast, the transAtlantic flights seem to almost always go to 134.95 coming into ZBW space but the aircraft heading west across Maine always seem to go to 128.05.. as if there were two frequencies for the same area but for diffferent traffic... I know they are not completely mutually exclusive as I did hear a Lufthhansa flight on 128.05 just today but maybe for them it is just the far northern part of Maine, whereas a flight from Halifax will go to 128.05 even if crossing into ZBW space down near the Calais and Houlton area...