On Feb 27, 11:30 am, "Danny Deger" wrote:
I am not convinced this is a true story. I googled/news "f-22,
international" and only got two hits for this story.

It does sound funky, but try google news with "raptor navigation" and
you'll find a dozen stories over a week's time about their having to
turn back midway across the Pacific.

Having said this, this is the kind of error that gets past the programmers
and testers. But I don't see how the aircraft attitude displays and fuel
management software would be effected by a time error. I could see the
tactical displays relying on data links getting messed up, but not attitude
and fuel management.

I agree, it's hard to visualize that common a point of failure. One
of the precepts of good avionics software is that there's not supposed
to be a single code location that could cause global errors.
Obviously they goofed ;-) A guess is it went into an infinite cpu-
eating loop and that indirectly made everything else falter.

Kev