The Soko G-4 Super Galeb (), also referred to as N-62, is a Yugoslav single-engine, advanced jet trainer and light ground-attack aircraft designed by the Aeronautical Technical Institute at Žarkovo and manufactured by the SOKO aircraft factory in Mostar. The Super Galeb was developed during the 1970s as a successor to, and replacement of, the Soko G-2 Galeb then in service with the Yugoslav Air Force (; ). On 17 July 1978, the maiden flight was performed by a development aircraft, designated G-4 PPP; during 1983, the first G-4 made its first flight. Quantity production of the type commenced in 1984; the assembly line operated up until the breakup of Yugoslavia in 1991. A total of 85 aircraft were built, most of which went into service with the Yugoslav Air Force, although six G-4s were exported to Myanmar. During the Yugoslav Wars, RV i PVO G-4s carried out ground-attack sorties, a total of four were recorded as having been lost to enemy air defences. During 1992, the remaining aircraft were relocated to Serbia and Montenegro where they entered service with the Air Force of the newly-formed FR Yugoslavia. A single G-4 was left over for the Republika Srpska Air Force. The Serbian Air Force has become the largest operator of the type, having acquired further Super Galebs from other ex-Yugoslavian republics. It intends to upgrade and operate its G-4s through to the 2030s. Development The G-4 Super Galeb was developed during the 1970s as a replacement for Yugoslav Air Force's existing fleet of the G-2 Galeb, a straight-winged jet trainer aircraft that had been developed during the late 1950s. Prior to 1999, the Galeb was the most commonly used trainer operated by the Yugoslav Air Force. According to aviation periodical Flight International, the Super Galeb showed unmistakable lineage from the earlier G-2, sharing the same British-sourced Rolls-Royce Viper turbojet engine, albeit uprated for greater performance. However, aviation historian Christopher Chant notes that: "the Super Galeb bears no more relation to the G-2 Galeb than an identity of role, being an altogether more advanced aircraft. The first of two prototypes had been reportedly completed by early 1978. Following completion of the initial ground testing phase, the Super Galeb's maiden flight was conducted on 17 July 1978. It was followed by the first flight of one of the six pre-production aircraft on 17 December 1980. These pre-production aircraft, along with the first