The popular Maidan Translations blog republished  a Facebook post by Dmitry Tymchuk , Head of the Ukrainian Center for Military-Political Studies, that describes several alleged international violations and “irregular actions” since late February 2014. Tymchuk begin this run-down by saying:
For instance, on February 28, at 8.45 a.m. the flight of more than 10 military helicopters was monitored by the technical observation post located on the cape of Takil from the direction of the Russian Federation to Ukraine.
Three helicopters (two KA-27 and one Mi-8) landed at the Kacha airport and passed through the border and customs established procedures according to an application made preliminarily. The rest of the helicopters came down near the airport; herewith, there was no answer received on the border detail chief’s appeal concerning the necessity of passing the established formalities by these helicopters, which arrived without a preliminary made application in violation of relevant agreement.
The chief of the border detail of the State Border Guard Service of Ukraine made a statement of Ukrainian border violation by aforementioned helicopters.