has also been used by Bulgaria, Czech Republic, Romania, Russia and Ukraine to carry out surveillance under the Open Skies Treaty. The An-30 has also been used as a weather control aircraft as the An-30M. Some have been fitted with frozen tanks of carbon dioxide to be ejected into the sky to form artificial rain clouds. These An-30s have also been put to use to avoid crop-damaging hailstorms and also to maintain good weather for, as examples, new airplane maiden flights, important parades like the 1st of May and the 850th anniversary of Moscow in September 1997. Between 1971 and 1980 a total of 115 aircraft were built and 23 were sold abroad to Afghanistan, Bulgaria, China, Cuba, Czechoslovakia, Mongolia and Vietnam. An-30s completely mapped Afghanistan in 1982, with one shot down by a MANPADS during an aerial photography flight in the Kabul area south of the Panjshir Valley on 11 March 1985. Cuban An-30s saw active service in Angola in 1987. On 22 April 2014, a Ukrainian An-30 was hit by pro-Russian separatists' small-arms fire while on a surveillance mission over the town of Sloviansk in eastern Ukraine. The plane landed safely with minor damage. On 6 June 2014, a Ukrainian An-30B was shot down near the city of Slavyansk in eastern Ukraine, reportedly by a MANPADS fired by local separatists. Accidents On 23 May 2012, a Russian Open Skies An-30 caught fire during an emergency landing at an airport outside the Czech city of Caslav. According to unconfirmed reports, the accident occurred because the crew were unable to extend the landing gear. Seven passengers were injured, out of fourteen Russian and nine Czech citizens on board. On 3 October 2018, a Sudan Air Force An-30 crashed while landing at Khartoum airport. Variants An-24FK The sole prototype converted from an An-24B with a navigator's station in an extensively glazed nose and elevated cockpit to give clearance for mission equipment. An-30A Version designed for civilian aviation. 65 were delivered to the Soviet Ministry of Civil Aviation, six to other Soviet civil organisations. 18 An-30As were built for export, seven of which were delivered to China. An-30B Version designed for the Soviet Air Force. 26 built. Main differences from An-30A was the avionics fit. Most An-30Bs were retrofitted with chaff/flare dispensers. An-30D Sibiryak Long-range version of the An-30A with increased fuel capacity, developed in 1990. Five aircraft were converted to An-30Ds.