(a) Notice and hearing.--No airport zoning regulations shall be adopted, amended or changed except by action of the municipality or the joint airport zoning board after a public hearing in relation thereto at which parties in interest and citizens shall have an opportunity to be heard. The notice shall be published once each week for two successive weeks in a newspaper of general circulation in the municipality or municipalities affected. The notice shall state the time and place of the hearing and the particular nature of the matter to be considered at the hearing. The first publication shall not be more than 30 days or less than 14 days from the date of the hearing.

(b) Airport Zoning Planning Agency.--Prior to the initial zoning of any airport hazard area, the municipality or joint airport zoning board which is to adopt the regulations shall appoint a planning agency, to be known as the Airport Zoning Planning Agency, to recommend the boundaries of the various zones to be established and the regulations to be adopted therefor. The planning agency shall make a preliminary report and, after notice given in the same manner as is provided in subsection (a), shall hold public hearings thereon before submitting its final report. The municipality or the joint airport zoning board shall not hold its public hearings or take other action until it has received the final report of the planning agency. Where a planning agency already exists, it may be appointed as the Airport Zoning Planning Agency.