Pilatus PC-9
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 Croatian Air Force, and the Royal Thai Air Force. Design and development. The PC-9 is a more powerful evolution of the PC-7. It retains the overall layout of its predecessor, but it has very little structural commonality with it. Amongst other improvements, the PC-9 features a larger cockpit with stepped ejection seats and also has a ventral airbrake. The PC-9 program officially started in 1982. Although some aerodynamic elements were tested on a PC-7 during 1982 and 1983, the first flight of the first PC-9 prototype took place on 7 May 1984. A  second prototype flew on 20 July of the same year; this prototype had all the standard electronic flight instrumentation and environmental control systems installed and was thus almost fully representative of the production version. Certification was achieved in September 1985. By this time, the PC-9 had lost the Royal Air Force trainer competition to the Short Tucano. However, the marketing links that Pilatus built up with British Aerospace during the competition led to their first order from Saudi Arabia. , more than 250 aircraft of this type have been built. Operational history. The first production aircraft for the Royal Australian Air  Force (RAAF) flew on 19 May 1987, under the Australian designation PC-9/A. Condor of Germany uses 10 examples of the target-towing variant. On 22 March 1991, during Operation Provide Comfort, Capt. Thomas Dietz and Lt. Bob Hehemann were patrolling over Iraqi airspace in F-15C Eagles when they detected two contacts on radar, prompting Dietz and Hehemann to approach to visually identify them. Hehemann pursued a PC-9, while Dietz positioned himself behind and shot down a Sukhoi Su-22. The pilot of the PC-9 saw the explosion and spontaneously ejected, nearly being struck by Hehemann. Hehemann confirmed the chute deployment  and pilots survival before flying in formation with the empty aircraft until it descended and crashed into the ground a minute and fifty seconds later. Hehemann was awarded with a maneuver kill. In August 2015, Pilatus received a contract to deliver nine PC-9Ms to the Royal Jordanian Air Force, but in April 2016 changed the order to eight PC-21s. Deliveries were due to start in January 2017 under the original deal. The United States Army operated three PC-9s from 1991–1996 as chase and test aircraft, they eventually were sold to Slovenia in 1995.