As I understand it, the rules for handguns in New York State are pretty simple. You must have a permit to even possess a handgun in NY. You must be a resident of the state to get a permit. No visitor (except someone like a Federal Officer) can legally possess a handgun in NY. If you move to NY you have to leave handguns behind until you can get your permit. If you move to NYC forget about it.
If you drive through the state and don’t make any stops you can have one in your car but if you are caught you’ll still be in for a major hassle. If you have a handgun in checked baggage and your plane unexpectedly stops in NY, don’t claim your baggage or you can be arrested.
TSA agents know the rules for flying with firearms. They can’t be expected to know the rules for each state where a firearm might be going.
And of course GA, like most states doesn’t “register” handguns.
“TSA agents know the rules for flying with firearms. “
TSA agents are the worst source for info about flying with guns.