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Entering LAT/LON in fmc


RocketRod
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Is it possible?  I have a flight plan with these in it, but it gives an error.  In the IXEG & XP11 format it is FPL.  Error I get is Point Not Found.  Like this:  KMDW SID 4153N08729W DCT GSH DCT ASHEN DCT NAPOL DCT MAYZE DCT DJB DCT ACO DCT EWC DCT IHD DCT 3960N07905W DCT 4001N07854W DCT 4002N07852W DCT 4003N07851W DCT 4005N07852W DCT 4005N07854W DCT 4005N07856W DCT 4003N07856W DCT 4002N07856W DCT 4000N07850W DCT GRV DCT ESL DCT DRUZZ DCT WEWIL DCT NEVVR DCT FORGT DCT SEPII DCT ALWYZ DCT AML DCT NUMMY DCT 3850N07703W DCT 3852N07701W DCT 3854N07703W DCT 3852N07706W DCT 3845N07657W DCT 3843N07659W DCT 3843N07702W STAR KDCA

Edited by RocketRod
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No, you can´t enter coordinates like that. Even the real FMC does not accep that, you would either have to make temporary waypoints (we don´t model that), or add them in a special format (so they only take 5 digits). We don´t model that yet.

There are published coordinates for atlantic crossings, and those are supported.

Cheers, Jan

 

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Jan

I thought the LEGS page should allow you to enter a full coordinate but the RTE pages was only the shorter version, and that IXEG didn't model the full version, PMDG allows full version in their LEGS page, just saying, maybe -300 is different from -800 FMC?

For a coordinate like 4153N08729W, you should be able to use the accepted short format 4187N and it would work but the coordinate would be a few nm off.  I have never tried that, I only use the daily published NATS and they are 5 digit format only (but I know I used full format in the LEGS page of PMDG in the past).  I guess this works for any coordinate? 

 

Jan, on this subject, NATS like 51050N work but N5150 are not accepted, what am I doing wrong? 

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Yes, there is quite a difference between the FMS version we model and the later (current) versions. As RNAV and RNP has gained importance, so has the ability to enter "weird" coordinates. As I said, it was possible to do so in our version as well - but you had to create a temporary waypoint (with 5 characters length) to use it in the FMS. Some pilots would enter "HOME" and then the coordinates of their house, just for kicks, for example.

There is also an intricate system to enter straigth (full degrees) coordinates in the way you are trying to do, Ian. But we don´t model that. You can only enter waypoints that are published in the AIRAC. You can check the fix.dat file for available fixes, here is a snippet:

 48.000000000  -10.000000000  4810N ENRT EG
 48.000000000  -15.000000000  4815N ENRT EG
 48.000000000  -20.000000000  4820N ENRT EG
 48.000000000  -25.000000000  4825N ENRT EG
 48.000000000  -30.000000000  4830N ENRT EG
 49.000000000   -9.000000000  4909N ENRT EG
 49.000000000  -14.000000000  4914N ENRT EG
 49.000000000  -15.000000000  4915N ENRT EG
 49.000000000  -20.000000000  4920N ENRT EG
 49.000000000  -25.000000000  4925N ENRT EG

Cheers, Jan

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