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

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

Hash: SHA256

Deja vu all over again.

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?

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

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systemsafety_at_xxxxxx Received on Wed Nov 18 2015 - 09:01:40 CET

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