It makes perfect sense when the top priority is being able to isolate electrical systems in case of an electrical fault or an in-flight fire: http://www.askthep

It makes perfect sense when the top priority is being able to isolate electrical systems in case of an electrical fault or an in-flight fire: http://www.askthepilot.com/malaysia-airlines-flight-370/ http://www.askthepilot.com/malaysia-airlines-flight-370/