The key data:[1]<p>Probability of surviving a single hit:<p><pre><code> Entire aircraft .851
Engine .588
Fuselage .940
Fuel system .973
Others .939
</code></pre>
That's pretty clear.<p>The A-10 Warthog, however, has most of its armor around the pilot, who sits in what's called a "titanium bathtub". This is very popular with pilots. So was armoring the back of the pilot's seat in WWII.<p>[1] <a href="http://people.ucsc.edu/~msmangel/Wald.pdf" rel="nofollow">http://people.ucsc.edu/~msmangel/Wald.pdf</a>