The NATO Communications and Information (NCI) Agency has begun work on a project to upgrade several of Bulgaria's air defence radars, aircraft and naval vessels to the new NATO Combat Identification System.
Equipment using the current standard, Mode 4, must be upgraded to Mode 5. In time, Mode 5 will be used for all NATO operations.
Bulgaria's Ministry of Defence (MoD) and the NCI Agency signed in November 2019 a technical arrangement and a statement of work. The Agency held a kick-off meeting in January 2020 in Sofia, Bulgaria, to begin the project.
The Agency, who is the acquisition agent for Bulgaria, will acquire the Mode 5 upgrade for various platforms: 16 air defence radars, six Navy vessels, six helicopters and two transport aircraft.