Comments made by senior govt officials indicate that the SB-1 has run out of time without doing much more than hover. Quote from Defense News:
While the SB-1 logged much less in flight time than the V-280, the Army has determined it has enough data to move forward on its FLRAA program rather than extend the JMR TD to wait for the Sikorsky-Boeing team to log equivalent hours to its competitor Bell.
As there have been no reports that the SB-1 has exceeded even 20 kts at the end of the JMR-TD the data the Army has gathered supports a conclusion that the tilt rotor can meet or exceed all program goals while the ABC concept is plagued with multiple limitations that will keep it from being a viable platform.
Full Article:
https://www.defensenews.com/land/202...ive-down-risk/