MarketSIAI-Marchetti SF.260
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SIAI-Marchetti SF.260

The SIAI-Marchetti SF.260 is an Italian light aircraft which has been commonly marketed as a military trainer and aerobatics aircraft.

Development
Origins During the early 1960s, Italian aircraft designer Stelio Frati commenced work on a new three-seat aerobatic design, which was primarily intended to serve as a sport aircraft. Unlike many of its peers of the era, it was developed to possess aerobatic capabilities akin to contemporary combat aircraft, as well as being equipped for instrument flight rules (IFR) flight. The envisioned aircraft, initially designated as the F.250 due to the horsepower of its engine, was Frati's first all-metal aircraft. During the late 1970s and 1980s, American airline pilot Frank Strickler became a major reseller of the type, being credited with re-launching civil sales of the SF.260 in the region, acquiring them from SIAI Marchetti in small batches and individually selling them on to US-based customers. This model featured various improvements, including redesigned tabs on the ailerons, a strengthened wing, a re-profiled aerofoil for improved low-speed handling, and an elongated tail/rudder. The SF.260C was designed for compliance with the requirements of military specifications. This variant was marketed towards the military trainer market, which soon adopted the type. In August 1986, Gates Learjet was approached by SIAI Marchetti to modify the SF.260TP for it to be compliant with the requirements of Federal Aviation Administration's (FAA) FAR Part 23, thus allowing it to be certified for civil use. Modifications were made in order to achieve lower stall speed and greater payload capacity, these performance improvements were principally achieved through aerodynamic alterations, such as the adoption of 'shark's teeth' along the wing's leading edge. In 1991–1992, SIAI-Marchetti proposed an updated SF.260, with an enlarged cockpit canopy and a revised fuel system to meet the United States Air Force's Enhanced Flight Screener competition. While the bid was unsuccessful (with the Slingsby T67 Firefly being preferred), it formed the basis for future production, as the fuel injected SF.260E and the normally aspirated SF.260F. During 2005, a batch of thirty SF.260EA were delivered to the Italian Air Force for a total price of €33 million ($40 million). This model, which had been specially developed to meet an Italian Air Force requirement for an advanced piston-engine aircraft, is used for screening and principal training activities. Production of the SF.260 continued at a low rate until 2017. A total of 976 aircraft, including prototypes, were built. ==Design==
Design
The SIAI-Marchetti SF.260 is a low-mounted cantilever wing monoplane, complete with a retractable tricycle undercarriage. It has been often praised for its sleek lines and sporty aesthetic appearance, while maintaining function as well, possessing jet-like handling as a result. The SF.260 has a compact, dense structure which possesses ballistics similar to a jet aircraft, and is approved to perform aerobatic manoeuvres. While being a fully aerobatic aircraft, it possesses favourable handling qualities, including relatively tame stall characteristics. Controllability during stalls is augmented by vanes located on the wing tip tanks which accelerate airflow over the tips and ailerons. Piston-engined and turboprop-engined SF.260 models generally share similar handling and flight performance. Speed limitations on the landing gear has been highlighted as a negative attribute. In order to safely perform aerobatics, the rear seat has to be unoccupied and the tip tanks must be empty of fuel prior to commencing any such manoeuvers, reducing the SF.260's flight endurance to roughly one and a half hours. ==Operational history==
Operational history
Burkina Faso This small air force operated six Warriors these Warriors were sold from the Philippines via Belgium in 1986, and were complemented by other four new Warriors coming directly from Italy, Libya Libya was a major customer of the SIAI Marchetti SF.260 with an order of 240 SF.260WLs. The first 60 aircraft were manufactured in Italy, while the others were delivered as knock-down kits, and assembled in a new plant in Sebha, under the supervision of Italian technicians. Gaddafi finally succeeded in installing a generally pro-Libyan government in N'Djamena in 1979 (the Transitional Government of National Unity or GUNT). However, the new Chadian defence minister, Hissène Habré, was fiercely anti-Libyan, and immediately started distancing himself from the rest of the government. This culminated in Habré's forces taking N'Djamena on 1 April 1980. Pro-Libyan factions fled to Libya, where they were reorganized and re-armed. These forces came back to Chad in October of the same year, together with the Islamic Legion. Once again, SF.260s were involved in heavy airstrikes on Faya-Largeau, together with Mi-25 helicopters, Mirage 5s and Tupolev Tu-22s. The quasi-continuous bombardment, which lasted for almost a week, had a big impact on the morale of the defenders. Hence, the pro-Libyan GUNT forces easily took control of Faya-Largeau in early November 1980. After continuing the advance towards the south, by late November, pro-Libyan units had reached Dougia, only 60 kilometres north of N'Djamena. Libyan SF.260s were forward-deployed there, together with Mi-25s. On 8 December, these aircraft, joined on 12 December by Tu-22 bombers, D-30 howitzers, and M-46 field guns, started attacking N'Djamena. The week-long bombing caused a huge amount of destruction in the Chadian capital, and a number of civilian casualties that remains unknown today. After Habré fled to Cameroon, resistance collapsed and his surviving fighters escaped to Sudan. On 16 September, a SF.260 was shot down by ground fire near Junaina in the Darfur region of Sudan; both crew members were killed. In May 1982, Habré's forces came back to Chad from their Sudanese bases, and in June 1982 they expelled the GUNT from the capital N'Djamena. Once again, its chief Goukouni Oueddei had to flee to Libya with his remaining forces. After another Libyan/GUNT offensive in 1983, France launched Operation Manta, resulting in a general stalemate that lasted until 1986; pro-Libyan GUNT forces retained control of the northern parts of the country. In February of that year, a new attack was launched towards the south, supported by SF.260s and helicopters. However, this offensive collapsed after only four days. Libyan SF.260s were used in the last phase of the conflict in Chad, the Toyota War, which started in December 1986. In February 1987, SF.260s were involved in attacks against FANT columns active in the area north of Faya-Largeau, using unguided rockets. Chadian MANPADS teams armed with FIM-43 Redeyes and 9K32 Strela-2s claimed to have shot down one LAAF SF.260 on 14 March near Fada. Five days later, when Chadian forces ambushed a Libyan armoured column, another SF.260 was shot down, either by Chadian-operated Redeyes or by FIM-92 Stingers operated by a French special forces team from the 11e régiment parachutiste de choc. Moreover, twelve SF.260s were lost when Chadian forces overran the airfield at Ouadi Doum on 21 March, including five captured intact. In an attempt to destroy as much of the captured equipment as possible, the Libyans heavily bombed the airfield from the air until late April. SF.260s were involved in these attacks. On 29 March, an SF.260 was claimed shot down by Chadian MANPADS north of Zouar. Lastly, in 1988, as Chad and Libya were negotiating a settlement for the conflict, pro-Libyan insurgents were infiltrated into Sudan, from where they started attacking garrisons inside Chad. They were often supported by SF.260s, and one of these was shot down on 28 November, and its crew captured. The Libyan government supported friendly countries with arms, and several SF.260Ws were handed over to air forces such as those of Burkina Faso, Burundi, Nicaragua, Uganda and possibly others. In 1987 Chad reported to the United Nations the destruction of eight SF.260s and the capture of nine others during its border war with Libya; some of these secondhand Libyan aircraft may even have found their way onto the US market. Alenia Aermacchi refurbished twelve SF.260 primary trainers for the Libyan Air Force; the work was performed jointly by Alenia Aermacchi and Tripoli-based Libyan-Italian Advanced Technology. The work included overhaul of the airframes and systems, including propellers and engines. Work began in late 2007 and ran through 2008. During the civil war, on May 7, 2011, this aircraft (along with a formation of pro-Gaddafi planes) was probably involved in a successful air raid over the rebel-held fuel depots at Misrata, setting them on fire. NATO failed to intercept the flight, despite the introduction of a no-fly zone over Libya in March. At the beginning of the uprising, one aircraft was crushed under a tank during a rebel attack on Misrata air base. As of 2013, at least six airframes are still in service with the new Libyan Air Force and are involved in patrols and possibly airstrikes against smugglers in the porous and remote borders. Nicaragua At least seven SF.260WLs were received by the Fuerza Aérea Sandinista as support from Libya in 1984–1985. They may have been used in the COIN role against the Contras and in the pilot training role. No further details are known. Three SF.260s surfaced in the USA on the secondhand market, a fourth is slowly being rebuilt in Guatemala. No longer in service. Philippines In the early 1970s, an order was placed for 48 SF.260s (32 SF.260M; 16 SF.260W). The first six were delivered in May 1973, replacing the Beech T-34A Mentor with 100th Training Wing at Fernando Air Base. Under "Project Layang", the Philippines Air Force plans to upgrade 18 SF.260M/W aircraft to the SF.260TP standard, by replacing the Lycoming piston engine with the Allison 250-B17D turboprop engine and newer avionics. The first upgraded SF.260 was delivered in 1996, no further details are available. The Philippines has finalized a deal with Alenia Aermacchi for 18 new-build SF.260F primary/basic trainers. All 18 were delivered by Aermacchi Italy which was locally assembled by Aerotech Industries Philippines by April 2011. Six Warriors were sold to Burkina Faso via Belgium in 1986. Rhodesia Despite an arms embargo, two batches of SF.260 aircraft were delivered in 1977. Because of the embargo, several buying teams travelled the world looking for suitable equipment. Through various routes, 17 SF.260C and 14 SF.260W aircraft arrived, the former to be used in the training role, while the warriors were being used for light attack duties and escort of convoys. In 1984–85, reportedly eight SF.260Ws were converted to SF.260TP standard by replacing the piston engine with a turboprop engine. Sri Lanka Six SF.260TPs were delivered to the Sri Lanka Air Force (SLAF) in 1985, to be used in the pilot training role, although they were later brought into the government's effort to subdue the Tamil Tigers. Two former factory demonstration aircraft were delivered in 1986 to replace lost aircraft, added by three new built aircraft in 1988. All SF.260 aircraft are based with No. 1 Flying Training Wing on the airbase SLAF Anuradhapura. The SF.260TP fleet was expanded in 1990–91 with the delivery of twelve former Myanmar SF.260Ws. The SF.260W fleet was withdrawn from use in 2001, being replaced by Chinese Nanchang PT-6 aircraft. The SF.260TP fleet was also retired a few years later. Turkey In 1990, the Turkish Air Force placed an order for 40 planes. The first six were produced in Italy and the remaining 34 were produced by Turkish Aerospace Industries in Turkey, under licence. All of the planes are used in training and are deployed at the 123rd Basic Training Squadron stationed at İzmir. Zimbabwe It was announced at the 1997 Paris Salon that the Air Force of Zimbabwe had ordered six F.260F aircraft, thus becoming the first operator of this new model. All six should have been delivered in 1998. ==Variants==
Variants
AviamilanoF.250 – first prototype powered by 187 kW (250 hp) Lycoming O-540-AID. The prototype, regn. I-ZUAR, was destroyed in a crash at Sestri Ponente, Genoa on 7 November 1965. • F.260 – two prototypes powered by 194 kW (260 hp) Lycoming O-540-E4A5 SIAI MarchettiSF.260 – Production version of the F.260 • SF.260A – Initial production version. Built in small numbers. • SF.260M – Militarised version with strengthened airframe and improved aerodynamics. First flown 1970. • SF.260MC - Version of SF.260M for Zaire. • SF.260MZ - Version of SF.260M for Zambia. • SF.260E – Uprated SF.260D to compete for a USAF contract but later marketed to other military buyers • SF.260F – As above, with fuel-injected engine • SF.260EA – Most recent variant for Italian Air Force, 30 built. Alenia AermacchiSF-260 – current production model ==Operators==
Operators
Military operators ; • Belgian Air Force ; • Burkina Faso Armed Forces ; • Chad Air Force, nine SF-260WL as of 2012. Two were donated by Libya in 2006. ; (from 1971 to 1997 ) • Congo Air Force, previously Zaire Air Force ; • Ethiopian Air Force ; • ; • Italian Air Force ; • Libyan Air Force ; • Malian Air Force ; • Mauritanian Air Force ; • Mexican Air Force, 25 SF-260E (2019) ; • Tunisian Air Force ; • Turkish Air Force ; • Venezuela Air Force ; • Somali Aeronautical Corps, 12 SF-260C (1979) ; • Sri Lanka Air Force, 11 SF-260TP (1985–2001) and 12 SF-260W (1991–1998, ex Myanmar) ; • Royal Thai Air Force, 18 SF-260M (1973–1999) ; • Ugandan Air Force ; (Abu Dhabi) • United Arab Emirates Air Force, 1 SF-260W (1975–1983) and 6 SF-260TP (1983) Civil operators Out of about 860 SF-260s produced, around 180 have been sold to civil users. Most of these are in private hands, although at least four airlines, Alitalia, Sabena, Royal Air Maroc and British Midland Airways purchased the aircraft as a trainer for airliner pilots. Air Combat USA operates 9 SF-260s. ==Specifications (SF-260M)==
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