Mikoyan-Gurevich MiG-15bis - Czechoslovak users

As Czechoslovakia became one of the USSR satellite countries, since the communist coup d'etat of 1948, their air force had been receiving Soviet made material since that year.
Therefore, during the years following the coup d'etat, both army and air force underwent several reforms and purges.
One of those, rather radical, reforms, fall back onto the air force as, in 1951 the 1st 2nd and 3rd Air Defence Districts of State territory were created, as well as the 15th Fighter Air Corps, which was equipped, almost entirely with either MiG-15, MiG-15bis or their Czechoslovak copies, Aero S-102 (which has already been covered in a previous post) and Aero S-103 (the Czechoslovak copy of the MiG-15bis) because, since 1948, they were replacing their fighters like the locally built Avia S.99 (a local copy of the Messerschmitt Bf.109G with a new engine), Supermarine Spitfires or De Havilland Mosquitoes.
The 15th Air Fighter Corps was comprised of 1st, 3rd, 5th and 166th Fighter Air Divisions. This last one, the 166th, became, in the late 1950s the 2nd Fighter Air Division.
The Aero S-103 was the license-built copy of the Mikoyan-Gurevich MiG-15bis. It was manufactured by Aero Vodochody n.p., at Odolena Voda, Czechoslovakia, where around 620 exemplars were manufactured.
Both the MiG-15, the MiG-15bis and their Czechoslovak copies equipped the Air Force of Czechoslovakia from the early 1950s until the mid-to-late 1950s when they were replaced with the more capable MiG-17. Some of them were exported to Arab countries like Egypt and Syria where they saw action in the Suez Crisis. Some outdated MiG-15bis were retained by training units and used as advanced trainers, which could be identified by the blue bands painted on the fuselage.
In 1968 around 75 old MiG-15bis were reconverted into ground-attack airplanes, equipping them with either bombs or air-to-ground missiles. Some of these are known to have been sold to Iraq, which incorporated them into their air force in the early 1970s, however they didn't seem to be very successful since the available data about them is rather scarce. They were named as MiG-15bisSB.
One dogfight between two Czechoslovak Aero-103s and two American F-84E Thunderjet took place on 10th March 1953 over the village of Merklín, in the Czechoslovak Bohemian region when the Czechoslovak Air Force detected two American F-84E Thunderjet fighters flying above Czechoslovak soil. The Czech pilot Jaroslav Srámek shot down one American Republic F-84E Thunderjet belonging to the 53rd Fighter-Bomber Squadron, 36th Fighter-Bomber wing and repelled the other. The American pilot, Lt. Warren G. Brown, managed to eject from the aircraft which crash-landed in West-German territory, approximately 35km (22mi) from the border, and survived.

Sources:
1. https://en.wikipedia.org/wiki/Czechoslovak_Air_Force
2. https://forum.valka.cz/topic/view/53180
3. https://forum.valka.cz/topic/view/196279
4. https://en.wikipedia.org/wiki/Mikoyan-Gurevich_MiG-15#Other_events
5. https://en.wikipedia.org/wiki/Air_battle_over_Merklín
6. Salamander Books - The Complete Book of Fighters