61-21
Restriction on Highest Projection of Building or Structure
Notwithstanding any other provisions of this Resolution, except as provided in Section 61-22 (Permitted Projection within any Flight Obstruction Area), the highest projection of any building or other structure hereafter constructed or of any existing building or other structure hereafter relocated, enlarged or reconstructed shall not penetrate:
(a) the approach surfaces, the transitional surfaces, the horizontal surface, or the conical surface, whichever is more restrictive, within the Airport Approach District of the flight obstruction area; and
(b) the horizontal surface or the conical surface within the Airport Circling District of the flight obstruction area.