Was the version of JFK that you installed a brand new installer just downloaded from FSDT?

 Also put back the KJFK_ALT.bgl to where it came from?

Edited September 12, 20214 yr by Dave_YVR

2 hours ago, Dave_YVR said:

Was the version of JFK that you installed a brand new installer just downloaded from FSDT?

 Also put back the KJFK_ALT.bgl to where it came from?

Yes and yes

I'm not sure I can be much help but I had, I think, a similar problem, but with v1 of FSDT's JFK.

Apologies if I've misunderstood the problem (and I'm not trying to derail the thread here) but I was finding that the entire AFCAD was displaced by a few hundred meters to the SE.

Zooming in in Little Navmap showed all the AI aircraft parked in the correct relative positions (i.e. you could see where the various terminals were by where the aircraft were parked) but they didn't line up with the scenery. The whole AFCAD seemed to have "shifted". I tried looking at it in ADE and, with it connected to P3D (also 4.5 HF3), I could slew around the airport checking the location of all the parking positions. The AFCAD lined up with the scenery but the AC were simply parked somewhere else.

I was pretty convinced it was a duplicate AFCAD problem too but I never found one. The really weird thing was that when I made some changes to the airline gate assignments of the parking positions, the changes seemed to be reflected in the "shifted" parked aircraft. I moved Alaska/Virgin Am to T7 (I was on v1 of the scenery so it was quite old) and in the shifted AFCAD there they were, parked up with all the BA aircraft... just not at T7, somewhere in the middle of the airport.

I tried everything I could think of, taking P3D back to its default state, reinstalling JFK, deactiviating all addons  (except JFK obvs) and numerous scans (with numerous programs) for duplicate AFCADs. In the end I gave up. Nothing seemed to fix it, on a few occassions I seemed to fix it but the next time I tried it, it was offset again.

I was going to ask for support but as it was such an old version I figured I wouldn't get much help (other than, "buy the new version") so left it. I was looking for a nice KEWR and ended up getting the DrZewiecki NY airports which included a JFK which worked fine.

Sorry I'm not much help and can't offer a solution, I don't know if this is the same problem you have either but if it is then you're not alone...