The pre-flight checklist starts automatically about 5 seconds after opening the main panel and goes thru checklists until I unload the main panel. This does not happen with NGXu in P3D v4.

What should I do to fix this?

Thanks-Keith Burns

If you're using button control, only way this is possible is if you are somehow looping the Main Button.

Try re-assigning the Main Button to a different key.

Thanx that fixed it!