Market participants at EBACE 2018 continued to discuss broker intermediated undisclosed back-to-back sale and purchase transactions of corporate aircraft. Theoretically, brokers who intermediate undisclosed back-to-back sale and purchase transactions have a greater risk profile under general principles of US contract and tort law than they do under general principles of English contract and tort law. The legal analysis is insufficient by itself to determine whether to pursue a back-to-back transaction.  A more complete, three-dimensional analysis also includes business judgment and consideration of ethics.