query: use pilatus pc-9
supports: The Royal Saudi Air Force (RSAF ""), is the aviation branch of the Saudi Arabian armed forces. The RSAF has developed from a largely defensive military force into one with an advanced offensive capability. The RSAF maintains the third largest fleet of F-15s after the American and Japanese air forces. The Pilatus PC-7 Turbo Trainer is a low-wing tandem-seat training aircraft, manufactured by Pilatus Aircraft of Switzerland. The aircraft is capable of all basic training functions including aerobatics, instrument, tactical and night flying. It has been selected by more than 20 air forces as their ab initio trainer. Since the aircraft's introduction in 1978, close to 500 have been sold, with the majority still in service. Over one million hours have been flown by PC-7s worldwide. The Royal Australian Air Force (RAAF), formed March 1921, is the aerial warfare branch of the Australian Defence Force. It directly continues the traditions of the Australian Flying Corps (AFC), formed on 22 October 1912. The RAAF provides support across a spectrum of operations such as air superiority, precision strikes, intelligence, surveillance and reconnaissance, air mobility, and humanitarian support. The Royal Thai Air Force or RTAF is the air force of the Kingdom of Thailand. Since its establishment in 1913 as one of the earliest air forces of Asia, the Royal Thai Air Force had engaged in numerous major and minor battles. During the Vietnam War era, the air force was supplied with USAF-aid equipment. The Australian Flying Corps (AFC) was the branch of the Australian Army responsible for operating aircraft during World War I, and the forerunner of the Royal Australian Air Force (RAAF). The AFC was established in 1912, though it was not until 1914 that it began flight training. The Australian Defence Force (ADF) is the military organisation responsible for the defence of Australia. It consists of the Royal Australian Navy (RAN), Australian Army, Royal Australian Air Force (RAAF) and a number of 'tri-service' units. The ADF has a strength of just over 80,000 full-time personnel and active reservists, and is supported by the Department of Defence and several other civilian agencies. TurboJET is the brand name for the operations of the Hong Kong-headquartered Shun Tak-China Travel Ship Management Limited, which was established from the joint venture between Shun Tak Holdings Limited and China Travel International Investment Hong Kong Limited in July 1999. It operates hydrofoil ferry services in southern China. Switzerland, officially the Swiss Confederation, is a federal republic in Europe. It consists of 26 cantons, and the city of Bern is the seat of the federal authorities. 
  The country is situated in Western-Central Europe, and is bordered by Italy to the south, France to the west, Germany to the north, and Austria and Liechtenstein to the east. Switzerland is a landlocked country geographically divided between the Alps, the Swiss Plateau and the Jura, spanning an area of . While the Alps occupy the greater part of the territory, the Swiss population of approximately eight million people is concentrated mostly on the plateau, where the largest cities are to be found: among them are the two global cities and economic centres Zürich and Geneva. The Vietnam War, also known as the Second Indochina War, and known in Vietnam as Resistance War Against America or simply the American War, was a war that occurred in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vietnam and the government of South Vietnam. The North Vietnamese army was supported by the Soviet Union, China and other communist allies and the South Vietnamese army was supported by the United States, South Korea, Australia, Thailand and other anti-communist allies and the war is therefore considered a Cold War-era proxy war. Aerobatics (a portmanteau of "aerial-acrobatics") is the practice of flying maneuvers involving aircraft altitudes that are not used in normal flight. Aerobatics are performed in airplanes and gliders for training, recreation, entertainment, and sport. Additionally, some helicopters, such as the MBB Bo 105, are capable of limited aerobatic maneuvers. An example of a fully aerobatic helicopter, capable of performing loops and rolls, is the Westland Lynx. The term is sometimes referred to as "acrobatics", especially when translated. The Swiss Air Force  is the air component of the Swiss Armed Forces, established on 31 July 1914 as part of the army and in October 1936 an independent service. The Swiss Armed Forces (German: "Schweizer Armee," French: "Armée suisse," Italian: "Esercito svizzero," Romanisch: "Armada svizra)" operates on land, in the air, and in international waters. Under the country's militia system, professional soldiers constitute about 5 percent of the military and the rest are conscripts or volunteers aged 19 to 34 (in some cases up to 50). Because of Switzerland's long history of neutrality, the armed forces do not take part in conflicts in other countries, but it does participate in international peacekeeping missions. Switzerland is part of the NATO Partnership for Peace programme. A turboprop engine is a turbine engine that drives an aircraft propeller. In contrast to a turbojet, the engine's exhaust gases do not contain enough energy to create significant thrust, since almost all of the engine's power is used to drive the propeller. The Pilatus PC - 9 is a single - engine , low - wing tandem - seat turboprop training aircraft manufactured by Pilatus Aircraft of Switzerland . Designed as a more powerful evolution of the Pilatus PC - 7 , the PC - 9 's first flight was made in May 1984 after which certification was achieved in September 1985 . After this , the first production orders for the type were received from the Royal Saudi Air Force , with deliveries commencing in 1985 . Since then , more than 250 airframes have been produced across five different variants and the type is employed by a number of military and civilian operators around the world , including the Swiss Air Force , the Royal Australian Air Force , and the Royal Thai Air Force . Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline, petrol, biodiesel blends, diesel fuel, fuel oil, or coal. According to the type of engine, it is discharged into the atmosphere through an exhaust pipe, flue gas stack, or propelling nozzle. It often disperses downwind in a pattern called an "exhaust plume".
candidates: aerial warfare aviation combustion defence engine flight training military navy seat service trainer training travel war
answer: flight training