SB-1 Defiant breaks cover

The SB-1 Defiant is Boeing and Sikorsky’s response to the US Army’s requirement for a medium-lift utility helicopter under its Future Vertical Lift programme.

Boeing and Sikorsky displayed their SB-1 Defiant compound helicopter, a Sikorsky model S-100 registered N100FV (c/n 0001), at the company’s facility in West Palm Beach, Florida, on December 2, 2018. The Defiant has been developed in response to the US Army’s Joint Multi- Role technology demonstrator programme, which will help to inform the Army’s Future Vertical Lift programme, which calls for a medium-lift helicopter to enter service in the early 2030s.

Nigel Pittaway