I think this really belongs in [TECH] but as some won't like the material I'll post it in [OT]. Lessons applicable in many other areas can be learned from this. To me this has similarity on a smaller and larger scale ($ & lives) with STS Challenger disaster (and many other disasters). - "Root cause": *Faulty circuit board solder joints *in a circuit board allowed unsafe rudder angles in high speed flight. Followed by: Improper over-ride of overlayed protective system by pilots was possible and was carried out. - (What seems to me personally only as) criminally-stupid contributing cause: System was known to have had failed intermittently 20+ times throughout 2014 and had never been fixed. - Final fatal causes: 1. Pilots followed out a reset action they'd seen maintenance men use on the ground. 2. Airbus system allowed auto-pilot and auto-thrust to be disabled by this action and not restored. 3. Vastly inadequate pilot training. 4. Lack of worst case "'thinking it through" analysis of possible outcomes by Airbus. *Hackaday:* Reasonable summary. Too many excuses offered for my liking. http://hackaday.com/2015/12/04/airasia-crash-analysis-who-or-what-failed/ *Final Report:* (206 page pdf)(in English) http://kemhubri.dephub.go.id/.../Final%20Report%20PK-AXC.pdf *Documentation page:* http://kemhubri.dephub.go.id/knkt/ntsc_home/ntsc.htm --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .