SB-1 Defiant Complete Except For Main Rotor Blades, Ground Runs to Begin in November

Installation of its eight 30-foot-long rigid rotor blades is all the SB-1 Defiant needs to be a complete compound helicopter scheduled for a first flight before the end of the year.“Defiant has been completely built, minus the rotor blades,” Rich Koucheravy,…

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