An aerodrome operator must have in place obstacle limitation surfaces (OLS) for the aerodrome that are defined surfaces in the airspace above and adjacent to the aerodrome. These surfaces are necessary to enable aircraft to maintain a satisfactory level of safety while manoeuvring at low altitude in the vicinity of the aerodrome. These surfaces should be free of obstacles and subject to control such as the establishment of zones, where the erection of buildings, masts and cranes are prohibited.
At Rotorua Airport, the Obstacle Limitation Surfaces are detailed in the District Plan, Appendix 6.12.1.
Civil Aviation Rule Part 77 prescribes the rules for persons proposing to construct or alter a structure that could pose a hazard in navigable airspace. Potential hazards to aviation are shown on the CAA’s website.
Structures that are considered to constitute a hazard in Navigable Airspace must be notified to the CAA at least 90 days before construction, using CAA Form 24077/01A, available on the CAA’s website.