[final_approach]

In that case, it'd be much less suspicious to purchase a small private jet. No reason to hijack a big airplane everyone would be looking for.

[001sky]

What you get with this plane is huge fuel and cargo capacity not to mention unsupported range.

[knowaveragejoe]

Neither of which are requirements to do serious damage, and as has been said numerous times before, there are plenty of other planes that meet that criteria that could have been obtained much more easily and not in full view of the public eye.

[001sky]

"Neither of which are requirements to do serious damage"

777-200-er has the range of a tu with hunreds of thousands of pounds more payload and it hold 20x the fuel of a citation x with 10x the mass. It also has double the range of a 777 freighter, with a similar maximum takeoff weight. So these are not interchangeble, but yes they are options.

[knowaveragejoe]

But they are still not requirements to do serious damage. Do you understand? Someone seeking to do serious damage has much less conspicuous options at their disposal.

[001sky]

"Serious damage" is unspecific and arbitrary.