The study of navaids is thought by some to be boring. It can be
rather fascinating though. A good foundation in the workings of
navaids will serve you well in future lessons. Therefore, I encourage
you to spend the time necessary to understand this series of lessons.
The following excerpt is contained in Chapter 1. NAVIGATION AIDS,
Section 1. AIR NAVIGATION RADIO AIDS, of the Aeronautical Information
Various types of air navigation aids are in use today, each serving
a special purpose. These aids have varied owners and operators,
namely: the Federal Aviation Administration (FAA), the military
services, private organizations, individual states and foreign governments.
The FAA has the statutory authority to establish, operate, maintain
air navigation facilities and to prescribe standards for the operation
of any of these aids which are used for instrument flight in federally
controlled airspace. These aids are tabulated in the Airport/Facilities
Navigation's prominent position in the manual is significant. In
today's complicated, busy world of air travel, it is virtually impossible
to operate without a thorough understanding of the different types
of navaids and their use. The following sections will cover
each type of navaid in common usage and discuss their proper use,
limitations, and application to the aviation world. In later sessions,
the techniques of how to use the various types navaids will be covered
The lessons here will cover NDBs, VORs and VORTACs,
DME, Marker Beacons, ILS, and GPS.
There are other types of navigation, such as LORAN and Omega, but,
since those are not implemented in Microsoft Flight Simulator, they
are beyond the scope of these lessons.