From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=0.6 required=5.0 tests=BAYES_00,FROM_WORDY autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,da26f7e99d6cfcf3 X-Google-Attributes: gid103376,public X-Google-ArrivalTime: 2001-04-07 15:00:06 PST Path: supernews.google.com!sn-xit-03!supernews.com!cyclone-sjo1.usenetserver.com!news-out-sjo.usenetserver.com!nntp.flash.net!newscon02.news.prodigy.com!newscon01.news.prodigy.com!prodigy.com!newsmst01!postmaster.news.prodigy.com!newssvr16.news.prodigy.com.POSTED!not-for-mail From: "Ken Garlington" Newsgroups: comp.lang.ada References: <9Pxz6.992$ix4.198187@news1.rdc1.sfba.home.com> <3ACF132F.95DD191A@home.com> Subject: Re: software failure question Organization: ex-FlashNet, now Prodigy X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.50.4522.1200 X-Mimeole: Produced By Microsoft MimeOLE V5.50.4522.1200 Message-ID: NNTP-Posting-Host: 65.65.209.57 X-Complaints-To: abuse@prodigy.net X-Trace: newssvr16.news.prodigy.com 986680521 6207069 65.65.209.57 (Sat, 07 Apr 2001 17:55:21 EDT) NNTP-Posting-Date: Sat, 07 Apr 2001 17:55:21 EDT Date: Sat, 07 Apr 2001 21:55:21 GMT Xref: supernews.google.com comp.lang.ada:6626 Date: 2001-04-07T21:55:21+00:00 List-Id: "Mark Biggar" wrote in message news:3ACF132F.95DD191A@home.com... : tmoran@acm.org wrote: : > : > Anyone know where this came from? : > "In one infamous software error, a misplaced minus sign resulted in a : > fighter jet's control system flipping the aircraft on its back whenever : > it crossed the equator. " : : It was the fly-by-wire software for the F-16. Actually, this isn't correct. It was an error in the simulation system, not the "fly-by-wire" embedded software. : Fortunately, : this error was caught in simulation and no planes were actually : flipped. For more info, you might want to look in the risks-digest : report database "http://catless.ncl.ac.uk/Risks". The bug in question : can be found easly by searching on "equator". : : -- : Mark Biggar : mark.a.biggar@home.com