[apprishiate]

http://www.bbc.com/future/bespoke/20140724-flight-risk/

This may provide some useful insight.

207 crashes - human error; 82 crashes - weather conditions; 74 crashes - mechanical failures; 23 crashes - crime

[WalterBright]

That doesn't include all the incidents where the pilot figured out what was wrong and what corrective action to take, and landed the airplane safely.

And besides, what do you do at 30,000 feet with a planeload of people and an emergency and nobody in charge?