High Quality Content by WIKIPEDIA articles! The Bell Model 427 is a twin-engine civil utility helicopter, a new design derived from on the Bell 407. It is scheduled to be replaced by the lengthened Bell 429.Bell has tried several incarnations of a twin version of its successful Bell 206 series, including the stillborn Bell 400 and 440 of the mid 1980s, and the limited production Bell 206LT TwinRanger of the early 1990s. Bell's original concept for a replacement for the 206LT TwinRanger was the Bell 407T, a relatively straightforward twin engine development of the Bell 407 with two Allison 250-C22B engines. However, Bell concluded that the payload/range performance of the 407T would not be sufficient.

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