Tennessee Code Title 42. Aeronautics § 42-6-108

(b) In the event a board of appeals exists or is created under title 13, chapter 7, part 1, or title 13, chapter 7, part 2, or by any private, special, or local act, the board of zoning appeals shall be designated by the chief legislative body to hear appeals from airport zoning ordinances created under this chapter.

(c) The chief legislative body shall provide and specify, in its zoning or other ordinance, general rules to govern the organization and procedure and jurisdiction of the board of appeals, which rules shall not be inconsistent with this chapter; and the board of appeals may adopt supplemental rules of procedure, not inconsistent with this chapter or such general rules.

(d) The zoning ordinance may provide that the board of appeals may, in appropriate cases and subject to the principles, standards, rules, conditions and safeguards set forth in the ordinance, make special exceptions to the terms of the zoning regulations in harmony with their general purpose and intent.

(e) The chief legislative body may also authorize the board of appeals to interpret the zoning maps and pass upon disputed questions of lot lines or district boundary lines or similar questions as they arise in the administration of the zoning regulations.