RedBack

I'm trying to replicate the issue. Flew the same mission 3 times and cannot replicate the misalignment. I'm going to put it down to possibly hard landing that causes the misalignment!

Yes

No I don't power down the Jet or switch to ground power while rearming.

I'm not sure that I DCS stores track files for previous misssions. I'll try and produce a track file when I next play the mission Good to know. To make sure that I have the correct INS coordinates, I alsway return to the initial spawn location Good suggestion thanks

Thanks for the comments all..... OK So my mission date is 2016, I have GPS switch ON, I fly for US Airforce, and yes, my landing at times can be rough as I try to flare. So based on the above, GPS should maintain constant alignment. But that is not the case. After landing and re-arming If I take off, my way point positions are way out of alignement and not where they are suppose to be per mission plan. My hud is misaligned. I found that after landing and re arming, a full alignment fixes this (no point in resuming the mission only to find out I'm misaligned after takeoff). Sad thing is it take 8 LOOOONG min but it works. Is there any other way to speed this up (say with stored heading)?

Couldn't find how to set the mission date except through the weather setting (see image below). If that is the mission date, then 2016 shoudl be after the GPS introduction date. is that correct or is there some other place to set the mission date? The video to fix way point drift is very helpfull. I didn't know you can do that, thanks. I'll give it a try at next mission

Re1 F16 is a moden aircraft (I thought) and does have GPS. Is this the setting that needs to be checked? What so you mean by "Doing a fix instead of an in flight alignment"?

Hi I'm new to DCS so forgive any dumb questions After doing a cold start with Stored Heading alignment, I fly a mission, and all is OK. After landing back to base to rearm and refuel, I noticed that the INS is now misaligned. I tried to do an inflight alignment, but I can't get it to work. To do inflight alignment, I fly strait and level using the Auto pilot I set the INS to InFlight Alignment I enter my magnetic compass heading into DED I wait until alignment count down to 10 and the "Align" sign on the HUD disapears I click Return on DED I set the INS to NAV The result of this procedure, gets me close alignment but not exact. Can someone tell me what causes the INS to be misaligned? Do I have to realign the ins after every landing? What am I doing wrong with the in flight alignment?

Turning off the illumination worked for me thanks.