First Flight for Sikorsky-Boeing?s Defiant Delayed Until 2019

Despite plans for the Sikorsky-Boeing Defiant helicopter to fly in 2018, the schedule has now slipped to next year, company executives said Dec. 12.

The Defiant ??which is based on Sikorsky?s X-2 technology ? is?an advanced rotary-wing platform developed for the Army to inform requirements for future vertical life aircraft. The system is part of the service’s joint multi-role technology demonstrator effort. The initiative is a precursor to the Army?s future vertical lift program, which is meant to replace legacy helicopters with a family of new systems in the 2030s.

While the Defiant is now fully built, recent discoveries with the power?train system test bed, or PSTB, system has caused delays, delaying first flight until early 2019, said Rich Koucheravy, Sikorsky?s director for business development for future vertical lift.