# Thread: Taxiway Designation - is there some universal logic to it?

1. Junior Member
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## Taxiway Designation - is there some universal logic to it?

Hey all,

So when you approach an airport from the air, you get an idea of which compass direction the runways point based on their numeric designation (e.g. Runway 7 points to roughly 70 degrees on the compass; Runway 15 L points to roughly 150 degrees and is the leftmost of two parallel runways).

But does any similar logic govern the designation of taxiways at an airport? It seems like they are all just a random hodgepodge unless there's some logic to them that I haven't puzzled out yet.

Finally, when you go into free flight and pick a flight plan you created, then say you want to start at the beginning airport, is there a way to tell FSX you don't want to start at the end of the runway? I keep having visions of one day getting into the sim and then 10 seconds later having a crash because some giant jetliner literally lands on top of me while I'm sitting on the end of the runway trying to get my flight plan cleared and my taxi instructions.

2. Junior Member
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The taxiways are labled or designated by the people responsible for designing the airport. Sometimes they will follow the standard alphabet in order and sometimes they won't. For instance, at KDFW taxiway Alpha is way down by runway 13R/31L and the turnoffs are labled sequentially A1, A2, etc. If you go over to the next set of runways 18R/36L the turnoffs on one side are: Y, Z and then WJ, WK, and on the other side: WG, WF, Y, Z, E1, WK, E2, E3, E4, WL, E5, E6, WM and E7!!! So even at the same airport they may be no rhyme or reason, that's why it's best to have current charts when going to different airports.

As far as the starting point in free flight, I believe that when you construct a flight plan you can designate to begin at a parking space or to start on the active runway. If you don't use a flight plan, when you choose the airport you want to fly from just click on Choose Runway/starting position just like when making a flight plan.
Last edited by evanstll; 07-02-2012 at 12:54 AM.

3. Without a map, the taxiway designations usually don't make sense. However, when you look at a map, you will see that they, more often than not, appear in a sequential order. Like when you are rolling down TWY A, you will see turn offs labeled, A1, A2, A3, etc or sometimes in the opposite order.

4. If you dont want to appear on the RWY, then, when you select an airport, also select a parking, ramp or gate. By default, FS will place you in the active runway. And, if you didnt do this when creating the FPL, then just click on no when FS asks you if you want the aircraft to be placed in the place selected in the flight plan. Hope this helps

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Thanks for the replies.

I finally figured out where to go do the settings, but it's still pretty bloody annoying that you have to set that for every single airport instead of just being able to change an option and have it be universally selected for every time you launch a "free flight" session. It should be easy enough that they could have programmed an option to either randomly assign you a gate / ramp space based on the size category of the plane, or to get the sim to pop a selection list and let you choose which ramp or gate you want to start from at the departure airport.

By the bye, Adam may be correct that the logic is _supposed_ to place you at the end of the active runway, but if you turn real world weather on, then more times than not when you pop up at the end of the runway you're at the wrong spot and you have to taxi to some other part of the airport before you can be cleared for take off. I haven't looked at the config files for airports yet, but I have a sneaking suspicion that someone programmed a "default" runway for each one, and when you don't specify a location the sim automagically plops you down there regardless of whether it makes any sense for weather conditions or not.

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wanna I believe that when you construct a flight plan you can designate to begin at a parking space or to start on the active runway.

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Originally Posted by Afroja86
wanna I believe that when you construct a flight plan you can designate to begin at a parking space or to start on the active runway.
Yeah when I went back and looked at some Flight Plans I created, when you select your departing airport you can designate where you want to start at that airport, just as if you were going to do some sort of one-off free flight and pick a starting airport.

8. Checkout FAA Memo (PDF) probably available on their website:
ENGINEERING BRIEF NO. 89
TAXIWAY NOMENCLATURE CONVENTION
"This Engineering Brief (E8) provides clarification for taxiway designation convention standards
Standards for Airpcrt Sign Systems."
Dan

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