That's the tail # that just got finished with maintenance/upgrades. Hasn't been in air since May up until first test flight earlier this week.
The one up in TX now is NOT the one GHWB used. It has been down since May for maintenance. Potus used the bush af1 today (and yesterday)
Correct. It's documented somewhere tail ending in 8000 went in for servicing earlier this year. Phonefagging, can't quickly sauce atm
Happy to help anon.