Quote Originally Posted by Fidel MD View Post
So, they just stream in with a regular flight, squawking the same code. If the radar breaks out two different targets with the same code, it will be interpreted as a mechanical or software error. At distance, they could just turn off the transponder and the radar wouldn't detect a primary target at all.
No that would not work. We fly in all the time, and they are the ones to tell us that our transponders are not working. They would know it was two aircraft, and if the transponder turned off they would be all over that flight. Our radar systems can tell the difference.