JTAC CDU Coordinates

I am having trouble inputting JTAC coordinates into the CDU correctly. I turn the dial to mission, input the XX000000 coordinates making sure it is NOT on L/L, it is on the other one, then name it, it pops up in my HUD, then I cycle to it. But for some reason it is hundreds of NM away up in the mountains somewhere. Sometimes it works like a charm, sometimes it does what I described above. Has anyone else had this problem or know what I am doing wrong? :helpsmilie: Thanks.

I am having trouble inputting JTAC coordinates into the CDU correctly. I turn the dial to mission, input the XX000000 coordinates making sure it is NOT on L/L, it is on the other one, then name it, it pops up in my HUD, then I cycle to it. But for some reason it is hundreds of NM away up in the mountains somewhere. Sometimes it works like a charm, sometimes it does what I described above. Has anyone else had this problem or know what I am doing wrong? :helpsmilie: Thanks.

Check to see if the MGRS co-ordinates are for 37T or 38T ?

"UTM and MGRS Coordinates Explained". Page 459 of the Flight Manual

Yep, that's likely the spot. If you enter coordinates and they're off by a LOOOONNNNGGG way, you're probably on the wrong zone. Change it to 37T or 38T.

Unfortunately, the part of the world we're in is split right in the middle by a border between two UTM zones.

If the grid ref. starts with A - G then you are in 37T. If it starts with K - Z then it is 38T.

ie: AC654432 would be in 37T

Is there a reason why JTAC does not to give 37T or 38T info? It would prevent shit like this.

If the grid ref. starts with A - G then you are in 37T. If it starts with K - Z then it is 38T.

 

ie: AC654432 would be in 37T

Now that's a great tip! Thanks for that!

+1 rep :)

I was having the same issue, thanks for the help. Now I only have to search the manual to figure out how to change the grid.

You have to switch your CDU to the Waypoint Sub-Page. Here you have to make sure that it is set to UTM (and not L/L). After this is done you can enter your Grid (next to L7 button).

I am having trouble inputting JTAC coordinates into the CDU correctly. I turn the dial to mission, input the XX000000 coordinates making sure it is NOT on L/L, it is on the other one, then name it, it pops up in my HUD, then I cycle to it. But for some reason it is hundreds of NM away up in the mountains somewhere. Sometimes it works like a charm, sometimes it does what I described above. Has anyone else had this problem or know what I am doing wrong? :helpsmilie: Thanks.

without flicking any dials, put the CDU on MFCD. Now follow these steps to edit a stored waypoint coordinate:

1- On UFC, press FN then 3. On MFCD, press Steerpoint

2- On MFCD Steerpoint page, press LL to change it to UTM

3- Punch in the coordinates alphabets by UFC alphabet (think of it as caps lock) CHR button and the relevant numbers (like a nokia phone).

4- Press the corresponding MFCD button where there is the old coordinates.

5- Now using HOTAS, set the HUD as SOI by Coolie Switch UP

6- Using stick, cycle waypoints on HUD right corner by DMS UP/DN short.

You have the target. Be warned to pick a steerpoint different from INIT or you'll never find your way back to base.

I see, thanks for the info! What would I do without you guys. Thanks Sarge55 for the reference.:thumbup:

Check to see if the MGRS co-ordinates are for 37T or 38T ?

 

 

 

"UTM and MGRS Coordinates Explained". Page 459 of the Flight Manual

Yep, that's likely the spot. If you enter coordinates and they're off by a LOOOONNNNGGG way, you're probably on the wrong zone. Change it to 37T or 38T.

 

Unfortunately, the part of the world we're in is split right in the middle by a border between two UTM zones.

If the grid ref. starts with A - G then you are in 37T. If it starts with K - Z then it is 38T.

 

ie: AC654432 would be in 37T