Section 2:384 - General zoning ordinances; effect or scope; joint boards; extent of jurisdiction of political subdivisions; reasonable regulationsA. In the event that a political sub-division has adopted, or hereafter adopts, a general zoning ordinance, regulating, among other things, the height of buildings, any airport zoning regulations adopted for the same area or portion thereof under this Chapter, may be incorporated in and made a part of such general zoning regulations, and be administered and enforced in connection therewith, but such general zoning regulations shall not limit the effectiveness or scope of the regulations adopted under this Chapter.B. Any two or more parishes or other political subdivisions may agree, by ordinance duly adopted, to create a joint board and delegate to said board the powers herein conferred to promulgate, administer, and enforce airport zoning regulations to protect the aerial approaches of any airport or landing field located within the corporate limits of any one or more of said political subdivisions. Such joint boards shall have as members two representatives appointed by the chief executive officer of each political subdivision participating in the creation of said board and a chairman elected by a majority of the members so appointed.C. The jurisdiction of each parish or other political subdivision is hereby extended to the promulgation, administering and enforcement of airport zoning regulations to protect the approaches of any airport or landing field which is owned by said parish or other political subdivision but located wholly or partially outside the corporate limits of the parish or other political subdivision. In case of conflict with any airport zoning or regulations promulgated by any other parish or other political subdivision, the regulations adopted pursuant to this sub-section shall prevail.D. All airport zoning regulations adopted under this Chapter shall be reasonable and none shall require the removal, lowering, or other change or alteration of any structure or tree not conforming to the regulations when adopted or amended, or otherwise interfere with the continuance of any non-conforming use, except as provided in R.S. 2:385 A.