After a few years and a couple of days os research, I think i have it solved read below.

 

Ok some more testing. This seems to work the most reliably. DONT MOVE PLANE ONCE UNTILL ALL UNITS ARE SET TO NAV, even starting an engine will move the plane slightly.

For Quick INS alignment.

Set park brake.

Battery on

Avionics on.

Start engine one.

Turn on alt one.

You need this. The INS is not connected to the battery or avionics bus. It has its own battery and will start even if  the plane battery is off, but it wont align. If battery light is yellow its on its own battery, it will flash briefy as it counts down as part of the test, if its on the Engine Gen.

On upper panel switch all 3 INS units to NAV directly.

On each INS select POS and enter in position, You must do this even if it is already loaded or it will hang at 65
.
Than on one of the units Select way Pt and enter in first way point. This too must be done or it will hang at 65. Only needs to be done on one unit, it will show on other 2.

If you switch any unit off you must restart  the procedure on that unit.

Switch each unit to DSRTK to monitor count down.

Switch each unit to Align,

It will count down fairly quick. Once each unit reaches 55 select it to NAV.

Normal alignment is much the same.

Switch each unit to Stby. enter in pos and first waypt as before. than switch to align. Takes abt 15 min. Again one engine must be running and on gen.

 

I hope it helps someone.

i dont know where you got this "one engine must be running" thing from, as you can align your ins without any engine running and all those steps are covered in the manual

Because without one gen running it wont align i have tried it many times, Without a gen running it wont even count down. This is FSX with acceleration.

i dont know where you got this "one engine must be running" thing from, as you can align your ins without any engine running and all those steps are covered in the manual

 

Seems you where right. I tried to follow procedure but it seemed to miss a few steps. Tou dont even need the battery on on plane.

 

1. One to follow it as it is you must load a flight plan via FSX before you start.

2. You must enter in current position on each unit even if it is indicated or it wont go past 6.

3. You must have at least one way point ( pos 1) of way Pt dial. or it wont go past 6. Only needs to be done on one unit, this will show on all 3.

 

If you do that it will work.

 

As a test i did a quick alignment on first. following above. It worked.

on the second and third unit i did not enter in the current position. It got to 6 as expected and stopped. So while it was still in alignment pos, i simple entered current position on both units and they both counted down almost straight away to 5.

 

So tomorrow night when grandaughter is asleep i will do the standard alignment.

 

cheers