Hi Nico!

I will write down the history for all to see:

 

>why is it that after "x" hours PSXT starts filling the parking spaces again with static planes?

Where did you read that?  Each 20 minutes PSXT updates the static parked aircraft situation, according to the data in the airport file. If you do not want these updates you must check the ILO button

 

>If I press the Flush button, only the live planes remain, but the moving ones are duplicated, and a frozen plane remains in their place.

If you press the Flush button, all static parked aircraft will be removed.  Nothing happens to the live aircraft. And it does not duplicate moving aircraft during a flush.

You may sometimes see double aircraft ("ghosts"), but that is because of problems in RT traffic data. Normally one of them will be removed after a minute or so.

 

I've been testing PSXT for many hours now, and I wrote based on that.
1. The ILO button is always checked for me, yet after a while (not 20 minutes, but a few hours) it regenerates the static planes.
2. Pressing the Flush button, based on the test, does indeed duplicate the currently moving aircraft. One copy remains frozen in its last position, the other copy continues according to the RT data.

 

26 minutes ago, vonSzuli said:

1. The ILO button is always checked for me, yet after a while (not 20 minutes, but a few hours) it regenerates the static planes.
2. Pressing the Flush button, based on the test, does indeed duplicate the currently moving aircraft. One copy remains frozen in its last position, the other copy continues according to the RT data.

@1  That is not programmed in PSXT.. If ILO is checked it will never add static parked again. What you may see are parked Live aircraft that disappear. 
From the Manual: "A live aircraft that has parked but has no longer a Real Traffic data connection will remain parked for maximum 3 hours (heavies) or 90 minutes (the rest), .."

@2 I cannot reproduce that behaviour over here... Upon pushing the Flush button, PSXT will call this function:  gf_removeAllParkedStatic()

  auto gf_removeAllParkedStatic() -> void {
    std::ranges::for_each(l_ac_static, [](auto& sat) {
      if (Status::active == sat.status) {
        sat.removeAircraftFromSim();
      }
                          });
  }

You see, no touching of live aircraft at all...

Edited September 14, 20241 yr by kiek