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Lessons learnt from Boeing 737 MAX accidents about human factor considerations in aircraft design and certification

Jézégou, Joël Lessons learnt from Boeing 737 MAX accidents about human factor considerations in aircraft design and certification. (2020) In: 1st International Conference on Cognitive Aircraft Systems - ICCAS 2020, 18 March 2020 - 19 March 2020 (Toulouse, France). (Unpublished)

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Abstract

Recently two newly certified Boeing 737-8 (MAX) (Lion Air flight JT610 and Ethiopian Airlines flight ET302) crashed within 4 months resulting in 346 fatalities. The causes of both accidents are similar: the unintended and repetitive activations of the Maneuvering Characteristics Augmentation System (MCAS), which resulted in repetitive aircraft nose down commands through horizontal stabilizer trim. The crews were not able to resolve the abnormal situation. Flight LNI043 just preceding the JT610 accident faced a similar situation resolved with major difficulties. MCAS is a flight law, implemented in Flight Control Computers (FCC), introduced by Boeing in B737 type definition as part of the modification from NG to MAX and certified under FAA regulations, the resulting amended type certificate being validated by various other aviation authorities.

Item Type:Invited Conference
Audience (conference):International conference without published proceedings
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Institution:Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
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Deposited On:09 May 2021 17:39

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