Correct me if I'm wrong. A GPS signal is jammed with a powerful radio. The powerful radio that stopped the signal at Plovdiv Airport was somewhere in a Thracian flat field, but not very far from the airport.
This was written on "Facebook" by Atanas Chobanov.
The head of the European Commission should be waiting for her in Plovdiv with an entire army of NSO, DANS, Military Counterintelligence and whatever wretched services the state has. They should have the equipment to hear this radio and when they received a signal about a problem with the GPS at the airport, they should rush to find it and stop it.
We used to watch in the movie "Stirlitz" how 80 years ago some fascist trucks with direction finders in Berlin were hunting Russian radio operators, that they even caught them without "they should"...