JDAM Woes: 1 of 4 bombs always hits wrong target

I'm having this weird, repeatable issue where one of my four JDAMs always hits a target assigned to a different bomb, and I can't figure out what I am doing wrong.

Payload:

2x BRU55 on Stations 2 and 8 with 2x GBU38 each.

Procedure (all through TPOD and TOO coord transfer to PP):

-Assign Target #1 to STA2 PP1

-Assign Target #3 to STA2 PP2

-Step to STA 8

-Assign Target #2 to STA8 PP1

-Assign Target #4 to STA8 PP2

In the following video, assuming release order is STA2 - STA8 - STA2 - STA8; I should hit the tanks in order from east to west (Tank #1 being eastern and Tank #4 being western).

Result:

-Hit Target #1

-Hit Target #4

-Hit Target #4 again

-Hit Target #3

I really can't figure out why, though I've noticed two odd things about the bomb release:

1. The MSN page tells me I have STA2 (left) selected, but the bomb from STA8 (right) is released first. Should I have stepped to STA8 before releasing?

2. After releasing the first bomb from STA8 (indicated STA2 on the MSN page), the MSN page continues to tell me STA2 is selected. The bombs automatically step, but the MSN page gives no indication of that automatic step. My coords for the first two bombs are displayed as being the same, which would mean I hit Target #1 twice...but in actuality I hit Target #4 twice?

Here's a video (I mistakenly disabled the cursor in my recording software). JDAM programming starts at 03:57; attack run starts at 05:42 (release 8nm from target).

yNVP5gw98-w

Where am I messing things up?

I haven’t video’d it, but I’ve had this exact scenario pop up twice this week. Station 2 and 8 with two GBU-38s each. I’ve gone through and visually confirmed the TGT coordinates are all unique, but only get 3 kills out of 4.

TOO to PP1 then PP2 on one station then repeat for the other station.

Each Bomb has a PP1 and a PP2. So right now you programmed 2 targets on one bomb than step to another.

It's WIP, later we will have a L for the Left bomb and a R for the right bomb on one station.

Right now you have to set PP1 (i.e. Station 2), step to another station and back to station 2. Now you can set PP1 for the second Bomb!

Just to make it clear again: PP1 and PP2 ist not for Bomb1 and Bomb2. Each Bomb hat up to 6(?) PP Targets and 2 Too targets.

If we get that L and R thing it will get more easy. Didn't used 2 JDAM'S on one station because of this.

Grettings

I've been having a similar issue when using double racks but thought I was just doing something wrong.

I got sick of testing so didn't quite figure out which bomb went where, but always had the same result of one target getting 2 bombs.

This was using 4x double racks and only PP1 for each station, dropping 4 bombs.

Well, I've been told on reddit that I need to undesignate after setting each target, but that doesn't make sense because I haven't actually locked onto anything to undesignate in the first place.

Well, I've been told on reddit that I need to undesignate after setting each target, but that doesn't make sense because I haven't actually locked onto anything to undesignate in the first place.

I watched the video very closely and could only see ( 1 ) step press but their must have at lease been a second one since three would be required.

I watched the video very closely and could only see ( 1 ) step press but their must have at lease been a second one since three would be required.

Three step presses for two stations?

Three step presses for two stations?

My error on the two stations. :doh

I'm starting to wonder if this is just wonky behavior with the WIP nature of JDAMs and the BRU55s. If you load one JDAM on four stations, things appear to behave normally...but now you have a useless fuel payload with a lack of external tanks.

I've successfully unloaded (to be counted with fingers) 8 JDAMs on 8 targets, so that works (2 batch PP1 then PP2),

I've also have had untold misses, and JDAMs not coming off the rails, flying to nowhere, and me trying to reprogram ('clear') endlessly in flight, to no avail,

because the procedure is 1. exact 2. 1 wrong click and the whole setup goes haywire. Perhaps that's the WIP part or perhaps it's not.

By the way if and when TOO1 and TOO2 work, that might uncomplicate matters if one could clear all previous settings with 'clear' and just could point and drop at last minute.

I can't get the program to clear at all. Many sources have been saying to undesignate, but undesignate does nothing. The previous coordinates still remain on the TOO page.

I tested this yesterday and I could consistently land 8 bombs on 8 different targets.

Whenever i didn't succed it turned out to be user error.

I can't get the program to clear at all. Many sources have been saying to undesignate, but undesignate does nothing. The previous coordinates still remain on the TOO page.

Note the last couple of digits on the coordinates. Once you undesignate and select a new target, the coordinates should change. I noticed that the coordinates does not completely go away with undesignate.

This is a very good tutorial for dropping multiple JDAM's. Start @ 10:37 and yes, from what I observed you do have to undesignate the target before sending the next set of coordinates to the desired PP target. At least it works for me.

This is a very good tutorial for dropping multiple JDAM's. Start @ 10:37 and yes, from what I observed you do have to undesignate the target before sending the next set of coordinates to the desired PP target. At least it works for me.

 

Notice from @ 10:37 he carries two double racks with 4 bombs, not 4 bombs on 4 "stations" which are not the racks, but the rack stations, and he only designates 1 (PP1) program to 'STA 2 3 7 8' which is murky (compared to when carrying 8 and the symbology) but hey it works.

With 4 double racks and 8 bombs, the actual STA 2 3 7 8 carry the bombs 1 2 3 4 5 6 7 8 and can be deployed when making sure STEP first all 4xPP1, then all PP2, the STEP picks the 'next one' whichever.

One false click and you're stuck, hence the 'clear' button (that is WIP).

It seems, perhaps in RL also, a better way would have been to have STA (or something) designate the physical stations, to unclutter the mind, and have STEP show on the STORES the designated 1 or 2 per the physical station.

And prob TOO1 and TOO2 would be quite handy also.

Then again, life is a bitch.

Note the last couple of digits on the coordinates. Once you undesignate and select a new target, the coordinates should change. I noticed that the coordinates does not completely go away with undesignate.

The coordinates change with TDC action regardless of whether I undesignated or not.