AIRFIELD OBSTRUCTION AND NAVIGATIONAL-AID
In this lesson, you will learn the terminology and requirements for airfield obstruction and NAVAID
engineering surveys. Due to vast differences in airfield instrumentation, customer requirements, and
FAA regulations, the content is general in nature.
TERMINAL LEARNING OBJECTIVE:
You will become familiar with the necessary terminology and requirements for
the Army surveyor to perform airfield obstruction and NAVAID engineering
You will be given the material contained in this lesson, a number 2 pencil, and a
You will correctly answer all practice questions following this exercise.
The material contained in this lesson was derived from FM 3-34.331.
AOCs and NAVAID surveys are extensive field or photogrammetric operations that are required by an
agreement between the FAA and the USAASA and are specified in AR 95-2. Airfield obstruction and
NAVAID surveys embrace surveying operations involved in obtaining accurate and complete NAVAID
and associated airport/heliport-obstruction and geodetic-positioning data. A precise geographic position
of these navigational facilities is required to support the FAA and a wide range of NAS activities. AOC
surveys provide source information on--
Runways and stopways.