If you got it close enough you could probably do it with a pretty low power transmitter. (Radio on a drone or something)

You'd need to be out by the transmitter in the middle of the airfield though to truely spoof it.

If you flew low at night I think you'd have a decent chance of getting a drone to the right location. You'll need either a decent setup or a decent position to control it though.

Although as others have mentioned, if you're trying to crash a plane or cause a disruption at the airport there's easier ways. Including just flying the drone over the runway (to close an airport).