On March 28 fighter aircraft of the NATO Air Policing Detachment were scrambled to intercept one IL-20, flying from Kaliningrad to mainland Russia without a pre-filed flight plan and not using its onboard transponder, though maintaining radio contact with the regional air traffic control centre.
On April 1 NATO fighter aircraft were scrambled to intercept and escort one IL-78 flying through international airspace from Kaliningrad to mainland Russia without having pre-filed a flight plan, maintaining the radio communication, the onboard transponder was switched on.
On April 2 NATO Air Policing fighter jets were scrambled to intercept one IL-76 flying from mainland Russia to Kaliningrad via international airspace without the flight plan, keeping radio communication with the regional air traffic control entre but without using the onboard transponder.
