Re: F-22 Raptor software problem

["Gene" <gene.ressler@gmail.com>]

On Feb 26, 6:55 pm, "peter koch" <peter.koch.lar...@gmail.com> wrote:
> On 26 Feb., 05:47, Hyman Rosen <hyro...@mail.com> 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.
>
> It surprises me that the software had problems dealing with this
> problem in the first place. Why anyone uses "calender time" for
> anything but display purposes is simply beyond my comprehension.
>
> /Peter

I vaguely remember years ago reading that the original F-16 flight
control software flipped the plane inverted when flown into the
southern hemisphere.  However, this was caught in a simulator before
the software was ever flown.  History repeats itself (sort of...).