RKI meaning in Airport Code ?

Rokot (Russian: Рокот meaning Rumble or Boom), also transliterated Rockot, was a Russian space launch vehicle that was capable of launching a payload of 1,950 kilograms into a 200 kilometre Earth orbit with 63° inclination. It was based on the UR-100N (SS-19 Stiletto) intercontinental ballistic missile (ICBM), supplied and operated by Khrunichev State Research and Production Space Center. The first launches started in the 1990s from Baikonur Cosmodrome out of a silo. Later commercial launches commenced from Plesetsk Cosmodrome using a launch ramp specially rebuilt from one for the Kosmos-3M rocket. The cost of the launcher itself was about $15 million in 1999; The contract with ESA for launching Swarm in September 2013 was worth €27.1 million ($36 million).