Re: [SystemSafety] 737 tail strike caused by typo on a tablet

From: Peter Bernard Ladkin < >
Date: Wed, 18 Nov 2015 09:01:41 +0100


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Deja vu all over again. http://www.rvs.uni-bielefeld.de/publications/Papers/LadkinHESSD2009.pdf

PBL On 2015-11-18 06:57 , Heath Raftery wrote:
> This news article is likely to be of interest to the list members. A jumbo's tail struck the
> runway on take-off, and root cause was found to be an incorrect take-off weight entered in the
> thrust parameter calculator. The fact the calculator is an app running on an iPad may or may
> not be important to the story, but it does give it that everyday appeal.
>
> The calculation is double checked using pen and paper, and so two dissimilar faults were
> necessary to invoke the failure vector. Is there anything more that can reasonably be done to
> avoid this safety issue?
>
> http://tech.slashdot.org/story/15/11/16/174213/737-tailstrike-caused-by-typo-on-a-tablet

Prof. Peter Bernard Ladkin, Faculty of Technology, University of Bielefeld, 33594 Bielefeld, Germany Je suis Charlie
Tel+msg +49 (0)521 880 7319 www.rvs.uni-bielefeld.de

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