107th Mixed Aviation Regiment The 107th Mixed Aviation Regiment ( " Serbo - Croatian : 107 . mešoviti avijacijski puk / 107 . мешовити авијацијски пук " ) was an aviation regiment established in 1944 as 421nd Assault Aviation Regiment ( " Serbo - Croatian : 421 . vazduhoplovni jurišni puk / 421 . ваздухопловни јуришни пук " ) . History . 421st Assault Aviation Regiment . The 421st Assault Aviation Regiment was established on December 20 , 1944 , in Laćarak , from Yugoslav partisan aviators with the Soviet Air Force 17th Air Army ' s 165th Guards Assault Aviation Regiment ( 165 . GShAP ) . It become independent form Soviet command and personal in May 1945 and became part of the 42nd Aviation Assault Division , equipped with Soviet Ilyushin Il - 2 ground - attack aircraft . The regiment took part in the final operations of the Liberation of Yugoslavia , during which time it was based at Laćarak , Krnješevci , Zemun , Nadalj , Bački Brestovac and Sombor airfields . After the war the regiment was briefly stationed at Skopje before moving to Niš in late 1945 . In 1948 this regiment , like all others in the Yugoslav Army was renamed in accordance with new naming conventions to be the 107th Assault Aviation Regiment . The commanders of the regiment during this period were Dušan Božović and Dimitrije Kovačević , while the Commissar was Vinko Sever . 107th Regiment . The 107th Assault Aviation Regiment remained at Niš airport for a short time after its renaming . In 1949 it moved to Leskovac , where it remained until 1953 , at which time it was returned to Niš . In 1953 the old Soviet Ilyushin Il - 2 attack aircraft were replaced with new domestic made Ikarus S - 49A fighter planes . Soon the regiment was renamed to become the 107th Fighter Aviation Regiment ( " Serbo - Croatian : 107 . lovački avijacijski puk / 107 . ловачки авијацијски пук " ) and was reequipped in 1957 with new American built F - 47D Thunderbolt ' s causing it to again be renamed into the 107th Fighter - Bomber Aviation Regiment ( " Serbo - Croatian : 107 . lovačko - bombarderski avijacijski puk / 107 . ловачко - бомбардерски авијацијски пук " ) . The P - 47 ' s remained in service until 1960 . By order no . 319 on August 18 , 1960 , the regiment was transformed into the 107th Helicopter Regiment ( " Serbo - Croatian : 107 . helikopterski puk / 107 . хеликоптерски пук " ) . It was equipped with Soviet - made Mil Mi - 4 and British Westland S - 55 helicopters . In 1961 with the " Drvar " reorganization of the Air Force , a new designation system was put in use to identify squadrons and the three squadrons of the 107th Helicopter Regiment became the 780th , the 781st and the 782nd Transport Helicopter Squadron . In 1964 the 677th Transport Aviation Squadron was equipped with Douglas C - 47 Skytrain and Lisunov Li - 3 cargo aircraft and was attached to the regiment . One year later , the 891st Liaison Aviation Squadron with domestic made Ikarus Kurir was also attached to the regiment , and in 1966 one more helicopter squadron , the 783rd was also assigned to the 107th Regiment . Other organizational changes include the 780th and 781st Transport Helicopter Squadron being reattached to the 111th Support Aviation Regiment , and the 782nd Transport Helicopter Squadron to the 81st Support Aviation Regiment . Both Mi - 4 and S - 55 helicopters remained in service until 1973 . During the period 1964 to 1973 the regiment was known under the designation " 107th Support Aviation Regiment " . By 1973 it was once again transformed into a Helicopter Regiment and moved to Mostar Airport , becoming part of the Military Aviation Academy with its main task being helicopter training . It was originally equipped with Soviet - made Mil Mi - 2 helicopters which were replaced in 1974 with domestic made Soko SA . 341 Gazelle helicopters . The regiment consisted of two helicopter squadrons , the 782nd and the 783rd . In 1988 , 783rd squadron was renumbered into the 722nd Anti - Armored Helicopter Squadron being equipped with the new Soko SA . 342 Gazelle Gama version of anti - tank helicopter . In the same year the 334th Fighter - Bomber Aviation Squadron was attached to 107th Regiment . In 1990 334th Fighter - Bomber Aviation Squadron was disbanded . The regiment was renamed again in 1991 into 107th Mixed Aviation Regiment . It was used in combat operations in 1991 and 1992 during the wars in Croatia and Bosnia and Herzegovina . With the withdrawal of the Yugoslav People ' s Army units from Bosnia and Herzegovina , the regiment moved in April 1992 from Mostar Airport to Golubovci Air Base in Montenegro . The regiment was disbanded in May 1992 , with most of regiments equipment and personal being transferred to the 722nd Squadron within the 97th Helicopter Regiment . The commanders of regiment in this period were Dimitrije Kovačević , Ljubo Vukčević , Slobodan Alagić , Radovan Daković , Miloš Bogdanović , Vojislav Mikić , Nikola Petrović , Vukadin Živković , Stevan Vukmanović , Života Pavković and Ivan Mihajlović .