Question: ATR 42 is an airliner developed and manufactured by a manufacturer headquartered where ?
Context: The ATR 72 is a twin-engine turboprop, short-haul regional airliner developed and produced in France and Italy by aircraft manufacturer ATR (Aerei da Trasporto Regionale or Avions de transport régional), a joint venture formed by French aerospace company Aérospatiale (now Airbus) and Italian aviation conglomerate Aeritalia (now Leonardo S.p.A.).  The number "72" in its name is derived from the aircraft's standard seating configuration in a passenger-carrying configuration, which could seat 72-78 passengers in a single-class arrangement. Tuninter Flight 1153 (UG1153/TUX1153) was a Tuninter Airlines international flight from Bari International Airport in Bari, Italy, to Djerba-Zarzis Airport in Djerba, Tunisia.  On 6 August 2005, the Tuninter ATR-72 ditched into the Mediterranean Sea about 18 miles (29 km) from the city of Palermo.  Sixteen of the 39 people on board died.  The accident resulted from fuel exhaustion due to the installation of fuel quantity indicators designed for the ATR 42, in the larger ATR 72.  It was also Tuninter's first fatal accident in the 14-year history of the company. Simplifly Deccan, formerly Air Deccan, was the first Indian low-cost carrier.  Headquartered in Bangalore, it operated domestic flights from seven base airports using a fleet of Airbus A320, ATR 42 and ATR 72 aircraft.  The airline appealed to middle class travellers with low fares and a large route network.  It also employed several innovative methods to ensure the profitability of its business model.  Nevertheless, Simplifly Deccan suffered high losses and merged with Kingfisher Airlines in April 2008.  Kingfisher replaced the Deccan brand with Kingfisher Red in August 2008. The British Aerospace ATP (Advanced Turbo-Prop) is an airliner produced by British Aerospace, introduced in the 1980s as an evolution of the Hawker Siddeley HS 748.  The fuel crisis and increasing worries about aircraft noise led business planners at British Aerospace to believe that there was a market for a short-range, low-noise, fuel-efficient turboprop aircraft.  By the time it entered the market, the segment was already well represented by designs such as the de Havilland Canada Dash 8, ATR 42 and ATR 72 and production was ended after only 64 examples. Japura Airport (IATA: RGT, ICAO: WIPR) is a domestic airport located in Rengat, Riau, Indonesia.  The airport serves Rengat and surrounding areas.  This airport can accommodate some aircraft such as BAe 146, ATR 72, ATR 42, Fokker 50, and others. ATR (Aerei da Trasporto Regionale or Avions de transport régional; "Regional Air Transport" in English) is a Franco-Italian aircraft manufacturer headquartered on the grounds of Toulouse Blagnac International Airport in Blagnac, France.  It was formed in 1981 by Aérospatiale of France (now Airbus) and Aeritalia (now Leonardo) of Italy.  Its primary products are the ATR 42 and ATR 72 aircraft.  ATR has sold more than 1,500 aircraft and has over 200 operators in more than 100 countries. The Boeing 737 is a short- to medium-range twinjet narrow-body airliner developed and manufactured by Boeing Commercial Airplanes in the United States.  Originally developed as a shorter, lower-cost twin-engine airliner derived from the 707 and 727, the 737 has developed into a family of ten passenger models with capacities from 85 to 215 passengers.  The 737 is Boeing's only narrow-body airliner in production, with the 737 Next Generation (-700, -800, and -900ER) and the re-engined and redesigned 737 MAX variants currently being built. Santa Bárbara Airlines Flight 518 was an ATR 42–300 twin-turboprop aircraft, registration YV1449, operating as a scheduled domestic flight from Mérida, Venezuela to Caracas that crashed into the side of a mountain on 21 February 2008, shortly after takeoff.  There were 43 passengers on board, with a crew consisting of two pilots and a flight attendant.  The wreckage was discovered a day later with no survivors.  It had the highest death toll of any aviation accident involving an ATR 42 until Trigana Air Service Flight 267 crashed in Papua, Indonesia, on 16 August 2015 with 54 deaths. The ATR 42 is a twin-turboprop, short-haul regional airliner developed and manufactured in France and Italy by ATR (Aerei da Trasporto Regionale or Avions de transport régional), a joint venture formed by French aerospace company Aérospatiale (now Airbus) and Italian aviation conglomerate Aeritalia (now Leonardo S.p.A.).  The number "42" in its name is derived from the aircraft's standard seating configuration in a passenger-carrying configuration, which typically varies between 40 and 52 passengers. Tuanku Tambusai Airport (IATA: PPR, ICAO: WIDE) is a domestic airport located in the Danausati village, district Rambah Samo, Rambah Samo County, Rokan Hulu, Riau.  It serves Pasir Pangaraian and surrounding areas.  This airport is also able to serving BAe 146, ATR 72, ATR 42, Fokker 50, and others.
Answer: Toulouse Blagnac International Airport in Blagnac, France