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Bruce
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How To Decode Flight Plans?

Mon Jul 19, 2004 6:48 am

Is there a web site or resource online that has explanations of the abbreviations used in flight plans? I mean like locations of the waypoints - for example, VXV.J91.TONIO.J42.........etc etc

I was looking at one flight plan and the only one I recognize besides the origin and destination is BGR which is Bangor, Maine.

bruce
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nonrvsmdmf
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RE: How To Decode Flight Plans?

Mon Jul 19, 2004 8:50 am

Bruce..there is nothing to decode.

My advice is to buy some high altitude charts.

VXV.J91.TONIO.J42:

VXV.J91=you leave you house and drive on the street
in front of your house. (VXV =HOUSE. J91=STREET)

.J91.TONIO.J42=as you drive one the street in front of your
house you need to make a turn at an intersection (TONIO)
onto another street (J42).

Get some charts or it will never make any sense.
I did not forget...I just misplaced the thought...
 
OPNLguy
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RE: How To Decode Flight Plans?

Mon Jul 19, 2004 9:31 am

>>>VXV.J91.TONIO.J42

Volunteer VOR, jet airway 91 to the TONIO intersection (which is also on J42) and then up J42....

VOR identifiers and 5-character airspace fixes can easily be found on airnav.com...

I agree with the gal from Universal who suggested getting some charts. A set of NACO "high" charts (H1-H11) will cover you 18,000 feet and above, and if you want lower, the "low" charts (L1-L28) can also be had.
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planespotting
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RE: How To Decode Flight Plans?

Mon Jul 19, 2004 10:14 am

flight plan:

IFR/VFR?
Ident
Type/Equipment
TAS
Departure
Departure Time
En Route Altitude
Route
Destination
Time En Route
Remarks
Fuel (hours minutes xx:xx)
Alternate
souls on board

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modesto2
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RE: How To Decode Flight Plans?

Mon Jul 19, 2004 10:36 am

Airways starting with "J" are high altitude airways while low altitude airways are "V." Additionally, direct routings have two dots ".." while a routing via a fix or airway is just one dot, ".". 5-letter "words" are intersections while 3-letter "words" are generally VORs. Those are just a few rudimentary rules about routings and flight plans.
 
N766UA
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RE: How To Decode Flight Plans?

Mon Jul 19, 2004 10:39 am

J= Jet airway (high altitude)
V= Victor airway (low altitude)

Nonrvsmdmf explained it better than I ever could have.
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Bruce
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How To Decode Flight Plans?

Mon Jul 19, 2004 12:58 pm

Ok. I'm going to try one here. Here is an actual real flight plan:

KHSV..VXV.J91.TONIO.J42.KONGO.J145.HVQ.J78.PSB.J49.BGR.J581.YJT..CYMON..DENDU..5100N/05000W..5200N/04000W..5300N/03000W..5300N/02000W..MALOT.UL9.BURAK.UN536.DUB.UL975.WAL.UM16.DOLAS.UL603.EVELI.UL19.TULIP.UL74.RTM..EBLG/0745

So this plane departs 36R and turns northeast, heading to Knoxville where VXV is....then follows airway J91 to the TONIO intersection which is near eastern Kentucky, turns at that intersection to airway J42 and heads to KONGO where he will turn again more to the north on airway J145 to HVQ which is the Charleston, WV vortac (probably near the charleston airport?)...

then its on airway J78 to PSP - the Phillipsburg vortac in Phillipsburg, PA (west of the town of State College, PA) where he will turn once again onto J49 and head up to the BGR vortac in Bangor, Maine...

then following airway J581 to YJT which is the Stephenville vortac in Canada - which is in Newfoundland. Then he will proceed direct to CYMON (what is CYMON? Its not listed) and then direct DENDU (again, not listed???)

Then onto the North Atlantic Crossing lat/long points......

airnav doesn't list european waypoints! So this is as far as I got..

Now when I tried to input the lat/long's of the vortac's onto my map I got some pretty crazy turns (kentucky - west va. - penn.) so I guess I am reading them wrong maybe?

bruce
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How To Decode Flight Plans?

Mon Jul 19, 2004 1:12 pm

Aw crap...... I dont know how that happened but the buttons on the top of my last post are gone so I can't edit it.... and somehow the forum cropped off the right half of all my sentences!!!

Here is the flight plan copied again:

KHSV..VXV.J91.TONIO.J42.KONGO.J145.HVQ.J78.PSB.J49.BGR.J581.YJT..
CYMON..DENDU..5100N/05000W..5200N/04000W..5300N/03000W..
5300N/02000W..MALOT.UL9.BURAK.UN536.DUB.UL975.WAL.UM16.DOLAS.
UL603.EVELI.UL19.TULIP.UL74.RTM..EBLG/0745

So it is J91 to the TONIO interesction, turning to follow J42 to the KONGO
intersection, then a turn to J145 and on to HVQ....

airnav gives the lat/long of the fixes but when i try and plot them on MS Streets&Trips I get some wacky turns. I might be entering the numbers in the wrong format for lat/long....

bruce

[Edited 2004-07-19 06:32:35]

[Edited 2004-07-19 06:34:43]
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RE: How To Decode Flight Plans?

Mon Jul 19, 2004 2:44 pm

On a related question, when I look up navaid fixes and VORs why are there 2 sets of lat/long listed....they correspond to different locations on a map.

For example, HVQ (charleston vortac) is listed as:

38-20-58.836N / 081-46-11.688W

and also:

38.3496767/-81.7699133

and the second one I think is more accurate as it points to a map location in the city of Charleston, W. VA

bruce
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Goldenshield
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RE: How To Decode Flight Plans?

Mon Jul 19, 2004 2:58 pm

These are just two different ways of expressing longitude and latitude. Mapquest will let you use both, as an example.
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RE: How To Decode Flight Plans?

Mon Jul 19, 2004 3:04 pm

Yeah, but the locations that each points to are different on my map! It would make a big difference in the flight plan!

bruce
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Goldenshield
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RE: How To Decode Flight Plans?

Mon Jul 19, 2004 3:20 pm

Are you sure that you put them in correctly?
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Bruce
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RE: How To Decode Flight Plans?

Mon Jul 19, 2004 3:30 pm

Well, is 38-20-58.836N equal to 38.205836 ??? That is how I entered it.

bruce
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Goldenshield
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RE: How To Decode Flight Plans?

Mon Jul 19, 2004 3:58 pm

I see where you are going.

The former is traditional Lat/Lon values; the latter is a newer version, called Decimal (for obvious reasons.)
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5T6
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RE: How To Decode Flight Plans?

Mon Jul 19, 2004 8:41 pm

Well, is 38-20-58.836N equal to 38.205836 ??? That is how I entered it.

No, it's not. Remember, you're working in "Base 60".

38-20-58-36 = 38.3496767 as stated above. The "decimal" is for the minutes and seconds.

60 x .3496767 = 20.98060

60 x .98060 = 58.836

Hope that helps,


Mike
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wing
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RE: How To Decode Flight Plans?

Tue Jul 20, 2004 12:07 am

VXV.J91.TONIO.J42.........

After waypoint VXV,via airway J91 to TONIO point,after that via airway J42 to some other way point etc....
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Bruce
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RE: How To Decode Flight Plans?

Tue Jul 20, 2004 4:24 am

That's why I avoided math in college. I suck at it. I have heard of working in different "base" numbers but have no clue how to convert. I can't get the same figure.
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timz
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RE: Decimal Lat-lon

Tue Jul 20, 2004 6:31 am

Sure you can-- you're just thinking it's more complicated than it is.

38-20-58.836 means 38 degrees, plus 20 minutes, plus 58.836 seconds. A minute is a sixtieth of a degree and a second is a sixtieth of a minute.

So 20 minutes is a third of a degree; add 58.836 seconds which is 0.0163433 degrees-- total 0.3496767 degrees.
 
cancidas
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RE: How To Decode Flight Plans?

Tue Jul 20, 2004 2:03 pm

anyone know why you always say "x souls on board" when calling in a flight plan? i never really understood that.
"...cannot the kingdom of salvation take me home."
 
OPNLguy
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RE: How To Decode Flight Plans?

Tue Jul 20, 2004 2:53 pm

>>>anyone know why you always say "x souls on board" when calling in a flight plan? i never really understood that.

I've always presumed that, in the event you crashed, it was so they'd know how many bodies/survivors to look for. Use of the word "souls" connotates the total number of humans onboards, irrespective of whether they're pax or crew.
ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
 
SlamClick
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RE: How To Decode Flight Plans?

Tue Jul 20, 2004 10:13 pm

That is correct for SOBs. And it doesn't matter whether the inert person in front of you is passenger or crew, they are all the same to CFR crews.

When declaring an emergency and asking for "the equipment" they always want to know souls on board and fuel in pounds. In the simulator, eight out of ten want to give the fuel on board in time remaining. Funny when you think that it is a fire crew that is asking. Do you mean that if your wings are torn off and the fuel spills all over the runway that it will burn for four hours and ten minutes?

Happiness is not seeing another trite Ste. Maarten photo all week long.
 
cancidas
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RE: How To Decode Flight Plans?

Tue Jul 20, 2004 11:37 pm

i wrote that wrong. why do we say souls and not something else. i know why you give a count of those on board.
"...cannot the kingdom of salvation take me home."
 
OPNLguy
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RE: How To Decode Flight Plans?

Wed Jul 21, 2004 12:37 am

>>>i wrote that wrong. why do we say souls and not something else.

If there were to ask "how many people onboard", I guess they felt that some pilots might be more apt to report just passengers, but not crew. While it's true that someone could pax souls versus crew souls, I guess someone felt the term "souls" was more naturally oriented to the total number of folks onboard the aircraft.
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jjbiv
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RE: How To Decode Flight Plans?

Wed Jul 21, 2004 2:19 am

What does a / mean?

Ex.:

MDW./.EON187002..SPI
and
TOL./.VWV.V92.GSH.GSH3.DRIVR.GSH3.MDW

joe
 
nonrvsmdmf
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RE: How To Decode Flight Plans?

Wed Jul 21, 2004 6:16 am

MDW./.EON187002..SPI

Looks like MDW is the departure airport, direct to radial 187 at 02nm from
wpt EON ..(two dots mean direct) direct to wpt SPI

TOL./.VWV.V92.GSH.GSH3.DRIVR.GSH3.MDW

TOL apt to wpt VWB airway v92 to GSH then the
GSH3 arrival(STAR) into MDW.

I do't know why the STAR is in the route string twice
though.
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RE: How To Decode Flight Plans?

Wed Jul 21, 2004 3:53 pm

Now 2 more related questions: is there any logic to the numbering of airways? In other words, do the numbers themselves mean anything? like J14, J91, J42, J581?

In the flight plan from Joe above there are no airways...just fixes where as mine has each airway. Does that mean the pilot of Joe's flight is free to navigate to the next wp using GPS and not necessarily follow a published airway?

bruce
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nonrvsmdmf
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RE: How To Decode Flight Plans?

Wed Jul 21, 2004 8:06 pm

Bruce,

As far as the airways, in the US a "J" airway means its a jet airway
for FL180 and above inclusive of FL180. A "V" is a victor airway
for FL17999 and below and does not include FL180.

The rest of the world does not follow this. I do not know how
they come up with the number for the airways.

Now for flight plans with no airways. Most aircraft that fly in upper
level airspace use either INS or GPS for navagation. These aircraft
are not required to follow the airways unless it is on a published
required route. Its not uncommon to file 400-500 mile direct legs.
The only requirement is that you have at least one waypoint within
each center for the plan filed. This rule only applies in the US and
Canada. Filing directs is easy in the US and most parts of Canada.

Most of the rest of the world requires you to follow preferred routes
and no directs are allowed unless it is a published direct.

I hope this makes sense, I just woke up.

Michelle
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planespotting
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RE: How To Decode Flight Plans?

Thu Jul 22, 2004 10:08 am

There is some logic however to the waypoints made by intersections of VOR radials and want not. Not necessarily good logic, but the FAA does have a sense of humor sometime. There is a waypoint near kansas City that is BBBBQ i think. there are some other ones that are sort of funny, i read about it in Flying magazine a few years ago.


on a lighter note, my friend Nic was flying with a company on their Cheyanne (twin turbine corporate aircraft) and there was an intersection somewhere in wisconsin named BOOTE or something like that (pronounced booty) and the female controller told him to "report BOOTE" and so he comes back and says "alrite we'll give you the BOOTE call". he thought it was quite funny. oh and a way point on the ILS approach in Clinton iowa is called BOOBE. it's funny to hear the controller call out "Proceed direct BOOBE".
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RE: How To Decode Flight Plans?

Thu Jul 22, 2004 2:04 pm

Well since we're on the topic of waypoints there are some near Nashville (think country music...) called GUITR and HEHAW and of course all of Tennessee loves their NFL football team, the Tennessee Titans so the Nashville Departure is called TITAN1

Down in south florida I believe there is one called MARLIN

and lets not forget VXV (Volunteer) which is near Knoxville..... TN is the "volunteer state" and Knox is home of the UT Vols

bruce
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OPNLguy
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RE: How To Decode Flight Plans?

Thu Jul 22, 2004 2:22 pm

One of the ILS approaches has the following intersections (in sequence): SPICY BARBQ RIBBS...  Big grin

One of the approaches at PSM has intersections being the phoentic equivalent of "I thought I saw a Puddydat" with "I did" as the missed approach fix.
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KALB
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RE: How To Decode Flight Plans?

Fri Jul 23, 2004 12:46 am

BOSOX is near Boston.
 
ZID
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RE: How To Decode Flight Plans?

Wed Jul 28, 2004 11:12 am

On the HEHAW arrival into Nashville, there are the PICKN and GRNIN intersections.

On the SWEED arrival into Cincinnati somebody in airspace and procedures thought it would be quite funny to name one of the primary clearance crossing intersections DRESR. So a hundred times a day we get to tell a pilot to "cross DRESR" at flight level 240.
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ZID
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RE: How To Decode Flight Plans?

Wed Jul 28, 2004 11:18 am

Jjbiv,

./. simply means a truncated route.

So in your examples :

MDW./.EON187002..SPI
and
TOL./.VWV.V92.GSH.GSH3.DRIVR.GSH3.MDW

We're just looking at flight plans of airborne aircraft that have progressed past the EON fix and VWV respectively, and the computer is showing the routes previous to those points as truncated instead of bothering us with the long list of what the aircraft have already flown.
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jjbiv
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RE: How To Decode Flight Plans?

Thu Jul 29, 2004 4:31 am

Thank you very much, ZID. I figured it was something along those lines since they are never filed like that, but converted into truncated form once airborne. It makes sence.

joe
 
thvgjp
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RE: How To Decode Flight Plans?

Fri Aug 13, 2004 1:24 am

Does anybody know what the numbers at the end of a flight plan mean?
Ex. BWI.V93..PSB149..V265.HAR..MDT/0023.
What does the 0023 indicate?
Also can anybody explain the routing PSB149. I realise this is a reporting point what does this mean? Did the pilot fly V93 to the reporting point the fly direct from the reporting point to the V265 airway??

Any help is appreciated
Glen
 
OPNLguy
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RE: How To Decode Flight Plans?

Fri Aug 13, 2004 1:55 am

0023 is the time enroute hours/minutes, i.e. 23 minutes

ALL views, opinions expressed are mine ONLY and are NOT representative of those shared by Southwest Airlines Co.
 
ZID
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RE: How To Decode Flight Plans?

Fri Aug 13, 2004 12:43 pm

THVGJP,

BWI.V93..PSB149..V265.HAR..MDT

means that the pilot will fly on victor airway 93 out of BWI until intercepting the PSB 149 degree radial, then follow the PSB 149 radial until joining victor airway 265 and taking V265 to the HAR vortac, then direct to the MDT airport.
I'm not joking! This is my job!
 
Fly2HMO
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RE: How To Decode Flight Plans?

Sat Aug 14, 2004 4:44 am

KPHX STARS are plagued with basketball references, like HOOPS, SUNSS, SLAMN, DUNKK Big grin

http://204.108.4.16/d-tpp/0408/00322SUNSS.PDF
 
WindowSeat
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RE: How To Decode Flight Plans?

Sat Aug 14, 2004 5:16 am



Well,

There's a YAHOO intersection near Nantucket Island.

cheers


I'm all in favour of keeping dangerous weapons out of the hands of fools. Let's start with keyboards.
 
spencer
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RE: How To Decode Flight Plans?

Mon Aug 16, 2004 3:59 am

In the UK at least, airway designators originally come from colour codes. Upper Golf One, UG1, was once Upper Green One. Amber, white, blue and red have also been used.
Spencer.
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