Why projects get behind

Who knows? Or, who knew?

This May 2011 slide from a U.S. DOD/DOT&E brief makes for an interesting companion to the recent F-35 problems leaked to the public.

(click image to make larger)

Interesting: even in March 2011, the expectation was to start pilot training by the end of 2011. We all know how that turned out.

In a short time, the estimate of when full-rate production would start slipped 3 years.

Historically for the F-35 program, slips are now a form of routine.