Even the California courts will occasionally render enforceable judgments. My client once won $5000 from Amex. The sheriff went to the local Amex office and asked them nicely to please pay the judgment from the till, they did. Since the sheriff charges $1000 up front to seize a vehicle, you will probably want to tap the till at the airline ticket counter before attempting to seize an airplane. Aside from your possible liability if you seized the wrong holding company's jet, once you have your jet there are pesky things like ramp fees and storage charges that run into the thousands of dollars very quickly, and you will have to hire someone who is properly licensed to taxi the sucker to the parking area.