On: “What if it changes?”

[Brometheus]

What if the FAA updates the code for the coordinates of the one and not the other. Then your abstraction is moot.

[woolion → Brometheus]

Of course not, abstraction works even better there! Every point that differs will have either a conditional, or an abstract part to be implemented by child classes. So the abstraction lets you know at a glance what are the key points to look for.