I dont think you can make regular units parachute out of destroyed aircraft?
You can add a secondary weapon to Aircraft to give them a sort of machinegun, and code in ammo for it. (though I dont think you want a long reload time on it..)
Making F-14s is as easy as modelling them, skinning them, and adding them. (But it isnt as easy as it sounds.)
Heh, it is advisable to practice modelling first though..personal experience..