Primary airport control station
Encyclopedia
Primary Airport Control Station, or PACS, is a survey marker
established in the vicinity of an airport and tied directly to the National Spatial Reference System
. This control consists of permanent marks with precisely determined latitudes, longitudes and elevations. PACS and SACS are designated by the National Geodetic Survey and must meet the specific siting, construction, and accuracy requirements. (also see airport security
)
PACS coordinates are established by meeting a survey, data processing, adjustment and reporting standard known as the NGS Bluebook. (See Air safety
for more info)
Survey marker
Survey markers, also called survey marks, and sometimes geodetic marks, are objects placed to mark key survey points on the Earth's surface. They are used in geodetic and land surveying. Informally, such marks are referred to as benchmarks, although strictly speaking the term "benchmark" is...
established in the vicinity of an airport and tied directly to the National Spatial Reference System
National Spatial Reference System
The National Spatial Reference System , which is managed by the National Geodetic Survey , is a coordinate system that includes latitude, longitude, elevation and other values. The NSRS consists of a National Shoreline; the National CORS, a system of Global Positioning System Continuously Operating...
. This control consists of permanent marks with precisely determined latitudes, longitudes and elevations. PACS and SACS are designated by the National Geodetic Survey and must meet the specific siting, construction, and accuracy requirements. (also see airport security
Airport security
Airport security refers to the techniques and methods used in protecting airports and aircraft from crime.Large numbers of people pass through airports. This presents potential targets for terrorism and other forms of crime due to the number of people located in a particular location...
)
PACS coordinates are established by meeting a survey, data processing, adjustment and reporting standard known as the NGS Bluebook. (See Air safety
Air safety
Air safety is a term encompassing the theory, investigation and categorization of flight failures, and the prevention of such failures through regulation, education and training. It can also be applied in the context of campaigns that inform the public as to the safety of air travel.-United...
for more info)