When does the FAA issue a determination of no hazard to air navigation?

The Federal Aviation Administration (FAA) issues a determination of no hazard to air navigation when a proposed structure does not exceed established obstruction standards. This determination is significant as it indicates that the structure, whether it is a building, antenna, or any other construction, is unlikely to interfere with the safe operation of air traffic. The FAA's evaluation process takes into account factors like the height of the structure in relation to surrounding terrain and existing flight paths.

By assessing the proposed structure against the obstruction standards, the FAA ensures that all airspace around the airport remains clear for safe takeoffs and landings. Structures that meet these standards are generally deemed safe, allowing for their construction without additional concerns related to air traffic safety. This process is crucial for maintaining a safe air navigation environment, and a determination of no hazard serves as an important approval step for developers and builders.

In contrast, if a structure exceeds obstruction standards, the FAA would issue a determination that could indicate a potential hazard. The timing of the FAA's determination is not dependent on the construction phase, such as when construction begins or when the structure is fully built; rather, it is focused on a pre-construction assessment of the proposed structure.