What is IFF? Governmental acronyms are enough to drive me crazy. lol
I guess I’m wondering if the difficulty that these terrorist groups would have in using these planes however they wanted to is that the planes have something (transponder or whatever...) that functions like a license plate - something that would identify them on radar as the stolen aircraft so that the FAA would immediately send the military after the aircraft. And if so, is there a way they can defeat that identification - like putting a different “license plate” on the plane or posing as a plane that doesn’t need to be identified beyond what it’s ordered to squawk so it doesn’t get into trouble because it’s got FAA authorization under VFR rules.
IFF = “Identification Friend or Foe”
Q. What is IFF and how does it work?
A. With supersonic aircraft and swift antiaircraft missiles, there is no time to identify friendly forces by visual means. IFF (Identification Friend or Foe) is an electronic system which can determine the intent of an aircraft with the speed of the fastest computer. A related system is used for air traffic control at civilian airports.
Wiki has basic info but consulting Dr. Google will prove fruitful.