That point about the political consequences to concealed carry in general is excellent. Let 5 terrorists take over a 777 with permits or even one guy hose a plane and that will make the Gabby situation look like a picnic for gun rights.
You can kiss constitutional carry good bye and concealed carry if allowed will need a PHD from CHL University plus a security clearance far beyond what we do now.
Given the particular nature of the airline environment I see no major gain for allowing carry on the plane. It is NOT the mall.
BTW, is the cockpit secure from gunfire. There are armor piercing 9mms out there for military usage. Can the cockpit withstand those? Going to examine ammo that you carry now?