Fact Check: Does Flightradar24 Track Military Stealth Aircraft, or Is It an Aviation Myth?
If broadcasting gives away an aircraft's position, why do military aviators flip the switch at all? The answer comes down to mundane air traffic safety regulations. Outside of declared war zones, airspace is crowded. Commercial airliners, regional turboprops, corporate jets, and general aviation planes pack the skies every hour of the day.
When a B-2 bomber flies from Whiteman Air Force Base in Missouri across public flight corridors, standard air traffic control centers require situational awareness to keep passenger jets separated by standard safety buffers, typically five nautical miles horizontally or 1,000 feet vertically. Controllers assign each military flight a discrete four-digit squawk code. Flipping off the transponder inside civilian domestic airspace creates a dangerous mid-air collision hazard.
Strategic deterrence also plays a deliberate role. When the Pentagon conducts deterrence flights near geopolitical flashpoints, such as the Baltic Sea, the Korean Peninsula, or the Persian Gulf, commanders often want foreign powers and global observers to notice their presence. Leaving an ADS-B beacon broadcasting over international waters sends an overt diplomatic message: We are operating here, and we are not hiding. During actual combat sorties or clandestine penetrations, pilots invoke strict emissions control (EMCON), cutting off all civilian transponders, tactical data links, and unshielded emissions.