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

[andy]

Use a windows laptop as backup to the iPad??

-----Original Message-----
From: systemsafety-bounces at lists.techfak.uni-bielefeld.de
[mailto:systemsafety-bounces at lists.techfak.uni-bielefeld.de] On Behalf Of
Heath Raftery
Sent: Wednesday, November 18, 2015 12:58 AM
To: <systemsafety at lists.techfak.uni-bielefeld.de>
Subject: [SystemSafety] 737 tail strike caused by typo on a tablet

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

Heath
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