Any balance remaining in the Aeronautics Account, after the payments made under Section 21682 and Section 21683.1, shall be used at the discretion of the commission for airport and aviation purposes subject to the provisions of Section 21684.
Source:
Section 21683.2, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=PUC§ionNum=21683.2..