The prime objective of TowerSAFE International in conducting airspace studies is to ensure the safety of air navigation and the efficient utilization of navigable airspace by aircraft. There are many demands being placed on the use of the navigable airspace; however, when conflicts arise concerning a structure being studied, the FAA emphasizes the need for conserving the navigable airspace for aircraft; preserving the integrity of the national airspace system; and protecting air navigation facilities from either electromagnetic or physical encroachments that would preclude normal operation.
In the case of such a conflicting demand for the airspace by a proposed construction or alteration, the first consideration should be given to altering the proposal. This is where your TowerSAFE Airspace Consultant intervenes. Conducting an airspace analysis prior to approaching the FAA enables you to identify the problems and devise an acceptable solution rather than rely on only what the FAA is willing to offer from the onset.
In the case of an existing structure, first consideration should be given to adjusting the aviation procedures to accommodate the structure. This does not preclude issuing a "Determination Of Hazard To Air Navigation" on an existing structure when the needed adjustment of aviation procedures could not be accomplished without a substantial adverse effect on aeronautical operations. In all cases, consideration should be given to all known plans on file received by the end of the public comment period or before issuance of a determination if the case was not circularized.
FAR Part 77 establishes standards for determining obstructions to air navigation. A structure that exceeds one or more of these standards is presumed to be a hazard to air navigation unless the obstruction evaluation study determines otherwise. An obstruction evaluation study shall identify the effect the proposal would have
on existing and proposed public-use and military airports and/or aeronautical facilities.
on existing and proposed Visual Flight Rule (VFR) / Instrument Flight Rule aeronautical departure, arrival and en route operations, procedures, and minimum flight altitudes.
regarding physical, electromagnetic, or line-of-sight interference on existing or proposed air navigation, communications, radar, and control systems facilities.
on airport capacity, as well as the cumulative impact resulting from the structure when combined with the impact of other existing or proposed structures.