After extensive flight testing in the wake of three accidents, Transport Canada and the FAA have approved an increase in the Bell 407's maximum speed to 130 kt. from 100 kt., and company officials expect to restore the light helicopter's 140-kt. never exceed speed (Vne) by the third quarter of this year. The latest approval is predicated on compliance with a Bell Helicopter Textron Alert Service Bulletin (ASB) that calls for installation of a redesigned tail rotor hub and blades as ...

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