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

Heath Raftery heath.raftery at restech.net.au
Wed Nov 18 06:57:40 CET 2015


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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