| Bell 427 | |
|---|---|
 A Bell 427 in flight | |
| General information | |
| Type | Multipurpose utility helicopter |
| National origin | United States/Canada/South Korea |
| Manufacturer | Bell Helicopter Samsung Aerospace Industries (later part ofKorea Aerospace Industries) |
| Status | In service |
| History | |
| Manufactured | 1997–2010 |
| Introduction date | 2000 |
| First flight | 11 December 1997 |
| Developed from | Bell 407 |
| Developed into | Bell 429 GlobalRanger |
TheBell 427 is a twin-engine, multirole, light utility helicopter designed and manufactured byBell Helicopter andSamsung Aerospace Industries (nowKorea Aerospace Industries). It has been replaced in production by the largerBell 429.
Bell has tried several incarnations of a twin version of its successfulBell 206 series, including theBell 400 and 440 in the mid-1980s, and the limited-productionBell 206LT TwinRanger in the early 1990s.[1] Bell's original concept for a replacement for the 206LT TwinRanger was theBell 407T, a relatively straightforward twin-engine development of theBell 407 with two Allison 250-C22B engines. However, Bell concluded that the payload-range performance of the 407T would not be sufficient.[2]
The company began development of a new light twin, in partnership withSouth Korea's Samsung Aerospace Industries. In February 1996, Bell announced itsModel 427 at the Heli Expo in Dallas. The Bell 427 was the company's first aircraft designed entirely on computer.[2] The Bell 427 first flew on December 11, 1997. Canadian certification was awarded on November 19, 1999, followed by US certification in January 2000, and US FAA dual pilot IFR certification in May 2000. Bell builds the 427's flight dynamics systems atFort Worth, Texas, while final assembly is performed at Bell'sMirabel, Quebec facility. The 427's fuselage and tailboom are built by Samsung (later part ofKAI) at its Sachon plant in South Korea.[2] The first customer deliveries occurred in January 2000.[3]
In 2004, Bell offered a redesigned 427 version, theBell 427i, which was developed in partnership with South Korea'sKorea Aerospace Industries andJapan's Mitsui Bussan Aerospace. The agreement gave KAI the development and production responsibility for the fuselage, cabin wiring, and fuel system. Mitsui Bussan became a financial backer.[4][5] The 427i included a newer glass cockpit and navigation systems to allow single pilot flying underInstrument flight rules. The design had a fuselage lengthened 1 ft 2 in (0.36 m), a more powerful engine version and transmission, and increased takeoff weight. However, the program was canceled and focus shifted to the improvedBell 429.[6] In February 2005, the existing 80 orders for the 427i were converted to the 429.[7] On January 24, 2008, Bell announced plans to officially discontinue its 427 line after current order commitments were fulfilled in 2010.[8]
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The Bell 427 is powered by twoPratt & Whitney CanadaPW207D turboshaft engines withFADEC.[2] Like the Bell 407, the 427 uses a four-blade main rotor system with a rigid, composite rotor hub and a two-blade tail rotor.[2]
The Bell 427's cabin is 13 in (33 cm) longer than the 407, and consists primarily of composite construction. The design removes the roof beam which obstructs the cabin on the 206/206L/407, and has an optional sliding main cabin door.[2]
The 427 offers eight-place seating including pilot in a two+three+three arrangement. Alternate layouts include four in the main cabin in a club configuration, or two stretchers and two medical attendants for medical evacuation duties.[2]
Argentina
Czech Republic
ParaguayData from Bell Helicopter,[13][14] International Directory of Civil Aircraft,[2] Aerospace-Technology[15][unreliable source?]
General characteristics
Performance
Related development
Aircraft of comparable role, configuration, and era
