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	Avions de Transport Regional ATR 42 Regional Airliner

DESCRIPTION: ATR was formed through a joint venture by Aerospatiale of France and Aeritalia (now Alenia) of Italy in 1980. Each company had been working on its own commuter aircraft, the Aeritalia AIT-230 and the Aerospatiale AS.35, before pooling resources to form ATR. British Aerospace later merged its commuter aircraft division with ATR as well to form Aero International Regional (AIR). The first design to result from this cooperation was the ATR 42 carrying 42 to 50 passengers. The aircraft utilizes a high-mounted wing, two Pratt & Whitney turboprop engines, and digital avionics. As of 1995, over 285 ATR 42s has been built for over 60 airlines. The ATR 42 proved so successful that an enlarged version, the ATR 72 was introduced in 1986. Data below for ATR 42-300 Last modified 14 September 2010
HISTORY:
First Flight	(42-300) 16 August 1984 (42-600) 4 March 2010
Service Entry	9 December 1985 (with Air Littoral)
CREW:	2 pilots, 2 flight attendants
PASSENGERS:	(typical) 42-50 (42-300) 42 in one-class
ESTIMATED COST:	unknown
AIRFOIL SECTIONS:
Wing Root	RA 1843 (NACA 43018 mod)
Wing Tip	RA 1343 (NACA 43013 mod)
DIMENSIONS:
Length	74.38 ft (22.67 m)
Wingspan	80.63 ft (24.57 m)
Height	24.90 ft (7.59 m)
Wing Area	unknown
Canard Area	not applicable
WEIGHTS:
Empty	22,675 lb (10,285 kg)
Normal Takeoff	unknown
Max Takeoff	(42-300) 36,820 lb (16,700 kg) (42-500) 40,920 lb (18,600 kg)
Fuel Capacity	internal: 5,676 lb (2,580 kg) external: not applicable
Max Payload	unknown
PROPULSION:
Powerplant	(42-300) two Pratt & Whitney Canada PW120 turboprops (42-500) two Pratt & Whitney Canada PW127E turboprops
Thrust	(42-300) 3,600 shp (2,685 kW) (42-500) 4,800 shp (3,580 kW)
PERFORMANCE:
Max Level Speed	at altitude: unknown at sea level: unknown cruise speed: 310 mph (500 km/h)
Initial Climb Rate	1,800 ft (550 m) / min
Service Ceiling	25,000 ft (7,630 m)
Cruise Altitude	unknown
Range	max fuel: 2,000 nm (3,700 km) max payload: 1,050 nm (1,945 km) [42-300] 880 nm (1,630 km) [42-500]
g-Limits	unknown
KNOWN VARIANTS:
ATR 42-300	First production model
ATR 42-320	ATR 42-300 with more powerful PW121 engines
ATR 42-400	Version carrying 48 passengers, also includes sound-absorbtion material and six-bladed propellers
ATR 42F	Cargo model with strengthened floor
ATR 42-500	Equipped with improved engines powering reduced size 6-bladed propellers at reduced rotation speed, uses advanced tip blades to reduce vibration and noise
ATR 42 MP Surveyor	Military variant developed for maritime surveillance duties including maritime patrol, search and rescue, and coastal defense; also capable of troop or cargo transport and medical evacuation
KNOWN OPERATORS:
Civil	AeroMar Air Littoral Air Martinique Air Pacific Arkia Continental Express Conviasa Airlines Czechoslovakian Airlines Empire Airways Eurowings MacAir Airlines Oman Air Pacific Sun Pan Am Express Royal Air Maroc Simmons Tarom ATR West Caribbean Airways Zambia Airways
Government/Military	Italy, Guardia Costiera Italiana (Italian Coast Guard) Italy, Guardia di Finanzia (Italian Customs Service) Libya, Al Quwwat al Jawwiya al Jamahiriya al Arabia al Libyya (Libyan Air Force) Nigeria (Nigerian Air Force)
3-VIEW SCHEMATIC:
SOURCES: Aboulafia, Richard. Jane's Civil Aircraft. Glasgow: Harper Collins Publishers, 1996, p. 102-103. ATR 42 website