The following article was written by Gregory J. Reigel of Reigel Law Firm, Ltd. and is being reproduced in its entirety with their permission.
In aircraft sales, the issue of Airworthiness Directive and Mandatory Service Bulletin compliance become issues, principally with consideration of flight and the selling price of the aircraft.
This article provides great insight into the legal consideration of compliance of both.
Service Bulletins: What Is An Aircraft Owner To Do?