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My dears,
we know Bell Model-440 was developed from Model-400 with composites
components,Model-442 twin turboshaft medium weight helicopter,Model-
540 was UH-1C and Model-800 was Huey II;
Do you have information about Bell Model-640 ? please.
we know Bell Model-440 was developed from Model-400 with composites
components,Model-442 twin turboshaft medium weight helicopter,Model-
540 was UH-1C and Model-800 was Huey II;
Do you have information about Bell Model-640 ? please.