I have not been unable to load into Free flight with any aircraft, every time it crashes to Desktop. With that been said, I have not been able to Start a free flight since the release, It is very frustrating. It has been a week and I have not enjoyed the simulator in that way besides career mode and Activities. I want to go flying. Thankful for MS2020 to get my flying fix. I really hope it gets resolved very soon. 
Default airports? I have the same in Default airports.
if i load into a handcrafted one or a third party i have no problem loading into it
GSX thing, disabled GSX jetways and default airports work now
I experience CTD on both default and handcrafted airports
Thank you, that worked and more CTD. Much appricated!
Today so far 5 CTDs trying to enter free flight or select a plane. Yesterday none.