[SystemSafety] Facebook?s drone crash likely caused by strong winds and autopilot, NTSB report says

[Chuck_Petras at selinc.com]

"The NTSB concluded that the likely cause of the accident was ?a 
structural failure of the wing as a result of exceeding the airspeed 
envelope due to wind gusts which were beyond the capabilities of the 
autopilot. Contributing to the accident was an insufficient amount of drag 
to track the glideslope in the presence of atmospheric disturbances.?"

Facebook?s drone crash likely caused by strong winds and autopilot, NTSB 
report says
http://www.siliconbeat.com/2016/12/19/facebooks-drone-crash-likely-caused-strong-winds-autopilot-ntsb-report-says/

NTSB Identification: DCA16CA197, 
https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20160701X62525&key=1


Chuck Petras, PE**
Schweitzer Engineering Laboratories, Inc
Pullman, WA  99163  USA
http://www.selinc.com
Tel: +1.509.332.1890

SEL Synchrophasors - A New View of the Power System <
http://synchrophasor.selinc.com>

Making Electric Power Safer, More Reliable, and More Economical (R)

** Registered in Oregon.
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