(2014) Sikorsky S-70i Black Hawk in "Nowa Technika Wojskowa - Polski przetarg śmigłowcowy", special issue for MSPO 2014 defence fair, ISSN 1230-1655, p. 8-9. External links PZL Mielec official website Aircraft manufacturers of Poland United Technologies Science and technology in Poland Polish brands 2007 mergers and acquisitions Polish Limited Liability Companies