The aircraft in question is "N" registered, which means it is recorded on the US Federal Aviation Administration registry. It has the appropriate safety approval to operate commercial aviation operations within, into or out of the European Union. It is understood that the air operator in question holds a US Government contract to carry out domestic and international air services.
Stops at Irish airports by private and commercial charters which are technical stops for non-traffic purposes (i.e. not picking up or setting down passengers), do not require prior authorisation from my Department. Therefore, no further examination of this operation is required under civil aviation legislation.