DH - Defence Helicopter

Quad A​ 2019: Defiant on track for full envelope expansion

16th April 2019 - 09:00 GMT | by Tim Martin in Nashville


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After a series of past development issues, the Sikorsky-Boeing SB>1 Defiant JMR-TD aircraft is now expected to complete its full flight test envelope before year end.

A figure of 115 flight hours over 12 months had been initially publicised in December and the Sikorsky-Boeing programme team could shorten that time ...

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