I have looked at this numerous times over the past and can find zero evidence for anything other than the 2 official AF1's; identical 747-200B's. Boeing has documentation, Military Machines & so forth. Of course it always says, officially any plane POTUS is on is designated AF1.
The plane Biden was on appears to be AF2 ... Not sure what that means but POTUS flies in a VC25A and VPOTUS flies in a Boeing C-32
I have looked at this numerous times over the past and can find zero evidence for anything other than the 2 official AF1's; identical 747-200B's. Boeing has documentation, Military Machines & so forth. Of course it always says, officially any plane POTUS is on is designated AF1.
Here is Trump using a C-32 as AF1
https://youtu.be/oMwtyj37UdU?t=54