JFK v2.1 for FSX. No I do not have AES.
Flying with stock C172 for simplicity (although same behavior with all other aircraft including PMDG, etc.). Departing KFJK 13R at dusk. Everything looks great -- airport buildings & gates as well as runway lighting. After takeoff I fly heading 240 at about 1500' for several miles. Looking out my right-hand window and slightly backwards, all scenery objects at JFK are still looking great. I can even see the sequenced lead-in 13R/L approach lighting ("white rabbits") off in the distance.
My intention is to make another right turn over the old Brooklyn CGAS, intercept CRI, and fly the 13L approach.
Then all of a sudden all JFK scenery objects disappear by about the time I'm getting close to the Brooklyn CGAS. Can't tell you the precise location, but obviously several miles away from JFK.
I follow the Shore Parkway (since now the lead-in lights and all other KJFK scenery objects have disappeared). Fly the 13L approach as best as I can by visual cues (Shore Parkway, aqueduct, etc.). KFJK scenery objects never re-appear, all the way down to a very dark 13L touchdown. Airplanes are there (Ultimate Traffic 2) bizarrely taxiing around a largely absent KFJK airport -- no buildings, no more taxi or runway lighting, etc; only dark slabs of runway and taxiways are present.
Something is causing KFJK scenery objects to disappear when one departs and then re-enters the airport "boundary," whatever that is. Apparently you get 1 shot at seeing scenery and that's it. After you leave and re-enter it is all gone.
Have uninstalled/reinstalled KJFK multiple times to no avail.
- ES