Survey
What it is.
Positional Accuracy
The Federal Aviation Administration (FAA) requires cellular and broadcast towers to have their positions certified by a surveyor licensed to work in the state where the project is located. The difference between a 1A and 2C is positional accuracy. A 1A is required to be accurate within 20 feet horizontally and three feet vertically, while a 2C is 50 feet horizontally and 20 feet vertically. The jurisdiction of the project will generally determine the level of accuracy required, although some wireless carriers and tower builders require higher accuracy regardless of location.