On July 8 NATO fighter jets intercepted two SU-30S flying through international airspace from mainland Russia to Kaliningrad. Their onboard transponders were switched off, the crews had no pre-filed flight plan, but maintained radio communication with the regional air traffic control centre.
On July 10 NATO fighter aircraft identified and escorted one SU-30 flying in international airspace from Kaliningrad to mainland Russia. Its onboard transponder was switched off, the crew had no pre-filed flight plan, and were not maintaining radio communication with the regional air traffic control. They also intercepted one TU-154 following the same route. Its onboard transponder as switched on, the crew had the pre-filed flight plan and were maintaining radio communication.
On July 10 NATO fighter jets were dispatched to intercept two SU-27 flying through international airspace from and to Kaliningrad with their onboard transponders switched off, without the flight plans, not maintaining radio communication with the regional air traffic control.
