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rhodges

North Atlantic Tracks What is "N93B"?

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In North Atlantic Advisories for "06/04/08 200Z - 06/05/08 0400Z" as an example the following routing is specified out of KJFK for crossing the pond to Europe:"Track V/ JFK.BETTE3.ACK..ALLEX.N93B.CYMON..DENDU.TRAKV"I understand the rest of the specified data (rash statement), but I have forgotten what the "N93B" designates.Other tracks have similar terminology specified (i.e. "N77B, N61B, N51B", etc.What do these points specify?Thanks:RTH

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From VATSIM forums:"It's a NAR, or North American Route. From what I understand, it goes from ALLEX to CYMON"

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You inspired me to update my own knowledge and here's what I found (or as some might say, maybe more than you wanted to know):As defined in the FAA's Pilot/Controller Glossary (dated 2/14/08)NORTH AMERICAN ROUTE- A numerically coded route preplanned over existing airway and route systems to and from specific coastal fixes serving the North Atlantic. North American Routes consist of the following: a. Common Route/Portion. That segment of a North American Route between the inland navigation facility and the coastal fix. b. Noncommon Route/Portion. That segment of a North American Route between the inland navigation facility and a designated North American terminal. c. Inland Navigation Facility. A navigation aid on a North American Route at which the common route and/or the noncommon route begins or ends. d. Coastal Fix. A navigation aid or intersection where an aircraft transitions between the domestic route structure and the oceanic route structure. They are listed and explained in great detail in the FAA's Airport/Facility Directories NE Supplement which is a free PDF download from http://naco.faa.gov/pdfs/ne_rear_05JUN2008.pdf . Be aware it is about 15MB (303 pages). The real "first" page of the NE Supplement is 346 and the NARS is covered in pps 478-492 (Pages 133-147 of the pdf download).Claude

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Thanks Claude:Definitely NOT "more than I wanted to know". I immediately saved the document in both my FS9 and FSX related folders along with the link as a website favorite under USA Navigation. Judging by the dating, "05 JUNE 2008 TO 31 JULY 2008", it would appear that this is updated every couple of months????Takes a little bit of head work until the progression of the routing is clear, but is vital info for a realistic transition.Thankfully, it also finally gives one a source for the specified waypoints relative to a multitude of cities outside of the NY area.Happy flying:RTHEdit:I guess about the only thing that still puzzles me just a little bit is that there is no "Non-Common Portion" listed for "East bound" routing.

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>I guess about the only thing that still puzzles me just a>little bit is that there is no "Non-Common Portion" listed for>"East bound" routing.Caution, opinion follows:Remember, the purpose of the NARS is to provide for (1) an orderly and efficient (?) westbound ingress from the NATs into the very busy North American airspace and then (2) more specfically, via a designated "Non-Common Portion", to a specific North American airport. Notice that the "Non-common" westbound routes include specific routings/airways to and for specifc locations.Now consider the reverse or eastbound egress out to the NATS and the Atlantic. In this case, you will plan to use routes, consistent with FAA/ATC requirements, that best (?) get you to the eastbound NATS gates. Sort of what's the best way westbound into the huge crowd versus, whew, finally out of the crowd and headed east.Another useful info source. Search for Crossatl.zip in the AVSIM file library. It's from Oct 2002 and was written by Krikor Michikian (an Olympic Airways A340 pilot) and Vangelis Hassiotis (Vatsim Europe).BTW, there is a European system as well called NERS, North Atlantic European Route System. It includes "Non-Common" eastbound routings. Here's more "more than you may want to know". http://trainati.com/PDF/North%20Atlantic%2...te%20Scheme.pdf http://www.cfmu.eurocontrol.int/cfmu/opsd/...jun/ners-eb.pdf http://www.cfmu.eurocontrol.int/cfmu/opsd/.../ners-eb-nc.pdfFiinally, in case anybody wonders, no I'm neither commercial pilot nor ATC expert. Just another simmer who happens to find understanding the NARS and NATS interesting.Happy reading while sitting there wondering what to do on the long cross-atlantic flight!!!

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Thanks again Claude:More very interesting and useful information, especially the added "NERS". Respectfully:RTH

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Good morning Claude, or anyone else that might offer help:Unfortunately, I now get, "The page cannot be found", when I try the referenced link, "http://naco.faa.gov/pdfs/ne_rear_05JUN2008.pdf". This pdf file offered a wealth of information, particularly an extensive listing of NARS. I sure hate to loose that information and have not found where else to find them listed. It made for a much more realistic flightplan from a multitude of airport locations (for trans Atlantic flights). Does anyone know where it can now be found, or possibly an alternate site with similar information?Respectfully:RTH

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Hi RTH,As Yoda might say, "tricky it is the FAA". The url changes, in part because the Airport Facility Directory and its NE Supplement, which includes the NARS routes, is updated every 56 days, and, yes, it's a bit hard to find the NE Supplement you're looking for. Anyway:1) Start here: http://naco.faa.gov/index.asp?xml=naco/online/d_afd 2) Select the "digital -Airport Facility Directory"3) Select Maine and click on Search (because we want the NE area supplement in this case)4) When the Maine airport list appears, scroll back up if needed, and just above the airport list Select "Supplement".BTW, AFAIK, the NARS routes don't change that often, so you could just download the supplement if you want too.Claude

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Thanks loads Claude: I was on the right track, (http://naco.faa.gov/), but I never could figure out where to go from there..For FS purposes, I was still useing the June-July 2008 publication which as you said has probably not changed much, but I was curious.Happy flying:RTH

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