de Operaciones Especiales No. 131 "Zorros" based in Barcelona, and Grupo de Operaciones Especiales No. 15 at the Escuadrón No.152 "Avispones" based in Maracaibo. The AT-27s, along with the OV-10 Broncos, were actively involved in many antiguerrilla, antinarcotic, and antikidnapping campaigns close to the Colombian borders. On 27 November 1992, the aircraft were used by mutineering officers who staged a coup d'état against President Carlos Andrés Pérez. The rebels dropped bombs and launched rockets against police and government buildings in Caracas. One EMB-312 and two OV-10 Broncos were shot down during the uprising by F-16s flown by loyalist pilots. A lot of 12 is scheduled to be refurbished in Venezuela as of 2013. Variants EMB-312A The standard production model with fatigue life of 8,000 hours: Tucano YT-27Pre-series prototypes Tucano T-27Two-seat basic-training variant Tucano AT-27Two-seat light-attack variant EMB-312F An uprated version built for the French Air Force, the EMB-312F is equipped with Telecommunications Electronique Aeronautique et Maritime (TEAM SA, part of Cobham plc) avionics, Thomson-CSF (now Thales Group) navigation aids, increased fatigue life, propeller and canopy de-icing system and a ventral airbrake. The first EMB-312F flew on 7 April 1993. EMB-312S Also known as the Short Tucano, the EMB-312S is an uprated, licence-produced trainer version built at Short Brothers of Belfast in Northern Ireland for the Royal Air Force and licensed for export. The type features a more powerful Honeywell 820 kW (1,100 shp) Garrett TPE331-12B engine with four-blade, variable-pitch propeller, custom avionics, structural strengthening expanding fatigue life to 12,000hr, two-piece canopy for better bird strike proofing, pressurized cabin, a ventral airbrake, aerodynamic changes to the wing, better wheel brakes, and an optional armament capability. Tucano T.1Original version of the Short Tucano used by the RAF. Tucano Mk.51Export variant for Kenya Air Force. Tucano Mk.52Export variant for Kuwait Air Force. EMB-312G1 A prototype built in 1986 with Garrett engine EMB-312H A Northrop/Embraer developed prototype for USAF (JPATS) competition for an advanced trainer, from which derived the EMB-314 Super Tucano (ALX) now in production for FAB. Operators National Air Force of Angola – 13 EMB-312 Argentine Air Force – 14 EMB-312 Escuela de Aviación Militar (EAM) at Cordoba. Brazilian Air Force – 102 EMB-312 Smoke Squadron (EDA) Brazilian Air Force Academy (Academia da Força Aérea) (AFA) First Squadron of the Fourteenth Aviation Group (1º/14º GAv) Esquadrão "Pampa" at Canoas Second Squadron of the Fourteenth Aviation Group (2º/14º GAv) at Canoas First Squadron