PHANTOM: In the news stories I have read, drug smugglers sometimes use smaller aircraft that can fly below the radar. In the past they also used old cargo planes (like DC-3s). I have never heard or read of an passenger airliner being flown empty and off-route to smuggle drugs, and I doubt the uniformed pilot or the drug cartel owns the 727.* What about GPS tracking by whoever owns the airliner?
Asterisk: I’m not sure what the type is; 727 is a guess.