 With the help of Ukrainian specialists, pro-GNA air forces also managed to bring back to service several major transport aircraft that were in storage for over a decade—one CH-130H Hercules (serial number "118"), one An-32P, and one Il-78 (serial number 5A-DLL—this is a former Libyan People's Air force aerial refueling aircraft, but now used solely as a transport aircraft by pro-GNA forces), all of which were flown by Sudanese mercenaries.During all of 2016, the pro-GNA Libyan Air Force carried out numerous air strikes on positions of the group Islamic State of Iraq and the Levant (ISIL), which had taken control of parts of northern Libya around the city of Sirte—using their L-39ZO, Mirage F-1ED and MiG-23ML fighter jets, pro-GNA forces conducted dozens of airstrikes on ISIL positions both outside and inside of the city of Sirte during the entire summer of 2016, but with limited results.During the 2015. and 2016., pro-GNA air force has launched over 600 airstrikes on both pro-LNA forces and ISIL militants in and around the city of Sirte, with vast majority of these strikes being conducted by pro-GNA aircraft stationed at the Misrata air force base (as seen by news camera on 4 September 2016. at the Misrata air force base - two MiG-23MLD, five G-2 Galeb, 10 L-39ZO Albatros, and one J-21 Jastreb fighter jets, as well as two Mi-24P combat attack helicopter and one Mi-8T transport helicopter).