What kind of lien does the FBO have when they possess the aircraft due to unpaid work?

The correct answer is particularly focused on the concept of a possessory lien, which is a legal right that allows a person or entity to retain possession of an item of property until a debt associated with that property is satisfied. In the context of an FBO (Fixed Base Operator), when they perform work on an aircraft, such as repairs or maintenance, and the owner fails to pay for these services, the FBO has a right to retain possession of the aircraft until the debt for those parts and services is paid.

This situation is governed by laws that recognize possessory liens as effective tools for service providers in the aviation industry to ensure they are compensated for the work performed. The lien is considered "possessory" because it arises from the FBO's physical control over the aircraft while they hold it for the purpose of securing payment for the work that has been completed.

Other types of liens mentioned, such as non-possessory liens or security liens, are not applicable in this context. A non-possessory lien would not allow the FBO to hold on to the aircraft, which is central to the nature of a possessory lien. Similarly, a security lien is typically related to the financing or securing of a loan rather than