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The Lockheed Martin F-22 Raptor fighter about a year ago hit an
interesting bug in the navigation software, something we should all be
aware of when writing navigation software.

This brief excerpt is from Wikipedia ():

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While attempting its first overseas deployment to the Kadena Air Base
in Okinawa, Japan, on 11 February 2007, a group of six Raptors flying
from Hickam AFB experienced multiple computer crashes coincident with
their crossing of the 180th meridian of longitude (the International
Date Line). The computer failures included at least navigation
(completely lost) and communication. The fighters were able to return
to Hawaii by following their tankers in good weather. The error was
fixed within 48 hours and the F-22s continued their journey to Kadena.
[47][48]

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That's a fast turnaround time on a bug fix in the military world!

Beware the 180th meridian!

Dan


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