Earlier today, an Aer LingusAirbus A330 issued the squawk code ‘7700’ while in the closing stages of a transatlantic flight from the West Coast of the United States to the Republic of Ireland. This quickly caught the attention of the online aviation community, leading the flight in question to briefly become the most-tracked service in the world on Flightradar24. In recent times, this has typically been reserved for flights in the Middle East.