BB,
How can there be a grounding before first flight? Kind of a Sarah Palin moment for you!
Also no one with a passing hint of the 53 would try to compare its early (or later) safety record as a yard stick for how it is to be done.
The 53K is a derivative, but the revolutionary in every way V-22 was contracted in 1983 and first flew in 1989. The K was contracted in 2006 and will still be sitting on the ground in 2015 or beyond. Get someone to do the math for you.
The Sultan