How to Obtain an Aviation Heights Clearance from the NCCA

Aviation Heights Clearance (AHC) is an official permission granted by the Nigerian Civil Aviation Authority (NCAA) to an applicant prior to the commencement of construction or erection of a structure within the Nigerian Airspace. AHC must be obtained before the construction of towers, telecommunication masts, high rise buildings/structures and landing facilities, failure of which may lead to demolition.

aviation heights clearance


The NCCA is the agency responsible for regulating activities and the granting of permits to erect these structures. The directives on how to obtain the Aviation Heights Clearance is provided for by the Nigerian Civil Aviation Authority Act 2006 (NCAA) which empowers the authority to prohibit, regulate and remove any structure which, by virtue of its height or position, is considered to endanger the safety of aircraft operations.

The Aviation Authority regulates these activities through the Directorate of Aerodrome and Airspace Standards. Thus, no person or organization shall put up a structure (permanent or temporary) within the navigable airspace of Nigeria unless such a person or organization is a holder of Aviation Heights Clearance Certificate granted under this Regulation.


Civil aviation is one of the most regulated industries in the world. The NCAA Act is the law that establishes the NCAA, the Nigerian Authority as each country as its own authority. NCAA is the apex regulatory body, overseeing the activities of all airlines and their pilots, engineers and cabin staff, airports, airstrips and heliports, navigation aids, all service providers including the airport authority and the air traffic service provider, aviation training institutions, etc. NCAA watches over the entire industry. It also issues Aviation Heights Clearance in accordance with the Aerodrome Regulations


The Nigerian Civil Aviation Authority has directed all operators and provider of the Global System for Mobile Communications (GSM) networks to obtain Aviation Heights Clearance (AHC) Permits and Licenses before constructing high rise structures (like telecommunications masts).

Step 1

A person or organization proposing the construction of a structure or alterations to existing structure shall make a request in writing to the Aviation Authority. The application letter shall contain the following information for an Off Aerodrome proposal:

  • Owner of the proposed structure.
  • Address of the proposed structure.
  • Geographical Coordinates (WGS 84) of the site.
  • Elevation (above mean sea level) of the site.
  • Proposed height of the structure including antennas or other appurtenances.
  • The Application letter shall contain the following supplemental information for On-Aerodrome proposal:
    • Drawing (preferably scaled) showing location of the object in relation to nearest active runways ;
    • Perpendicular distance of the proposed structure to the nearest active runway centerline ;
    • Distance along centerline (actual or extended) from runway end to the perpendicular intercepts point ;
    • Ground elevation at the site of the proposed structure ;
    • Geographical Coordinates (WGS 84) of the site ;
    • Proposed height of the structure including antennas or other appurtenances ;
    • Sketches, drawings, etc. showing the type of construction or alteration being proposed.

Step 2

The Authority may conduct an aeronautical study to determine the impact of a proposed structure or an existing structure, or an alteration of an existing structure on aeronautical operations, procedures, charting of flights and the safety of flight.  The proposed site shall be assessed by the Authority to verify the accuracy of the information submitted by the applicant and for effective aeronautical studies of the structure.

Step 3

Upon aeronautical study and verification of the information submitted, the Authority shall issue a determination stating whether the proposed construction or alteration would be a hazard to air navigation, and will advise the applicant and known interested person accordingly. The Authority shall issue AHC if the results of aeronautical study carried out indicates that the erection of the structure on the proposed site will not constitute hazard to air navigation.

The Authority shall not grant AHC to any structure when the aeronautical study concludes that the proposed construction or alteration will exceed an obstruction standard and would have a substantial aeronautical impact.

aviation heights clearance



The Holder of an AHC Certificate must ensure that:

  • The height of the structure does not exceed the height for which AHC has been granted;
  • The structure is appropriately marked and lighted as stipulated in the conditions for granting the AHC;
  • The painting and warning lights to be used on the approved structures conform to appropriate standards for conspicuity that would better serve aviation safety;
  • Proper records of AHC granted to it and the renewal of the AHC, at least 30 days to the expiry dates.
  • Upon receiving the certificate, necessary information of the applicant and the certificate must be registered in the Register of aerodromes with 7 days of getting the certificate.


StructureInitial Processing FeeRenewal
Communication Mass100, 00050, 000
Other high rise Building/Structure100, 00050, 000
Towers500, 000200, 000



The AHC when issued remains valid for a period of one year after which it will be due for renewal unless the certificate is suspended, withdrawn or cancelled by the Authority.


The Authority shall suspend or cancel AHC certificate if there is a variation in the approved height of structure without notification to the Authority or the holder of the AHC fails to carry out appropriate maintenance regarding the painting, markers and warning lights on the structure. The holder of a suspended or cancelled AHC shall ensure that the anomalies that caused the suspension or cancellation are addressed within 21- days or have the structure dismantled.


Failure to obtain the AHC Certificate might lead to the structure being dismantled or demolished as it constitutes danger to safety of air navigation. The Nigerian Civil Aviation Authority (NCAA) has embarked on a campaign to enforce the provisions of the Act to ensure compliance. It announced on April 24, 2019, that it is set to enforce Aviation Height Clearance on over 7000 telecom masts that constitute danger to aviation navigation and issued a 30-day ultimatum to telecom providers in Nigeria to comply.


We are able to secure Aviation Heights Clearance for you or your business and put you through the whole documentation process for construction of towers, telecommunication masts, high rise buildings/structures and landing facilities. 

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