It's a fun fantasy to imagine you could seize a plane but
(a) No judge in their right mind would allow it AND
(b) Rarely do the airlines own their planes, it's usually some separate leasing corporation.

In fact, airlines own little of what carries their brand.

You'd have much better luck attaching a checking account, and there are a number of ways to find out which accounts the airline has (one of the easier being to make a small payment to them with a check and reading the endorsement on the returned check).