Aircraft and Airports - As enacted, specifies that a joint board established by two municipalities and two counties pursuant to an interlocal agreement for the purpose of operating an airport is vested with all the powers, rights, duties, and privileges of a regional airport authority. - Amends TCA Title 42, Chapter 5.

HB 1691 clarifies that joint boards formed by two municipalities and two counties under an interlocal agreement for operating an airport gain all powers, duties, and privileges of a regional airport authority under Tennessee law. This directly affects those specific joint boards, recognizing them as public entities with expanded authority to manage airports. The bill amends state code to vest these boards with the full legal standing of a regional airport authority, including the ability to file a charter with the secretary of state as a nonprofit corporation. It requires governance details (like member terms and composition) to be defined solely in the original interlocal agreement, not in the amended statute.