Re: F-22 Raptor software problem

[JPWoodruff@gmail.com]

On Feb 26, 7:01 am, "Aurele" <aurele.vit...@gmail.com> wrote:
> On Feb 26, 3:55 am, "Alex R. Mosteo" <devn...@mailinator.com> wrote:
>
>
>
> > Hyman Rosen wrote:
> > > It's being reported (Slashdot, via CNN) that twelve of these
> > > planes had their navigation and communications completely shut
> > > down as they crossed the international date line while flying
> > > from Hawaii to Japan. I believe much of the plane's software
> > > is in Ada, but I have no details as to what caused the error.
>
> > Linky to slashdot:
>
> >http://it.slashdot.org/article.pl?sid=07/02/25/2038217
>
> > "The new US stealth fighter, the F-22 Raptor, was deployed for the first time
> > to Asia earlier this month. On Feb. 11, twelve Raptors flying from Hawaii to
> > Japan were forced to turn back when a software glitch crashed all of the
> > F-22s' on-board computers as they crossed the international date line. The
> > delay in arrival in Japan was previously reported, with rumors of problems
> > with the software. CNN television, however, this morning reported that every
> > fighter completely lost all navigation and communications when they crossed
> > the international date line. They reportedly had to turn around and follow
> > their tankers by visual contact back to Hawaii. According to the CNN story, if
> > they had not been with their tankers, or the weather had been bad, this would
> > have been serious. CNN has not put up anything on their website yet."
>
> > The summary is, they say in the comments, incorrect, since the F22 relies in
> > computers for control so a crash of "all on-board computers" would have been
> > quite a bigger problem.
>
> Well, someone is likely to lose their job for improperly implementing
> the geoid and/or datum model!


I don't think fault will fall so harshly on the implementer.  But the
members of the configuration control committee have some explaining to
do.