Slovak Air Force 0921 MiG-29AS Slovak Air Force performed an upgrade on their MiG-29/-29UB for NATO compatibility. Work is done by RAC MiG and Western firms, starting from 2005. The aircraft now has navigation and communications systems from Rockwell Collins, an IFF system from BAE Systems, new glass cockpit features multi-function LC displays and digital processors and also fitted to be integrate with Western equipment in the future. However, the armaments of the aircraft remain unchanged. 12 out of 21 of the entire MiG-29 fleet were upgraded and had been delivered as of late February 2008.