BendixKing KLN 94 - Pilots Guide User Manual
Page 98

CL C
class C airspace (VFR frequency)
CLR
clearance delivery
CTA
control area (VFR frequency used outside the U.S.)
CTAF
common traffic advisory frequency
CTR
center (when center is used for approach/departure
control)
DEP
departure
DIR
director (approach control/radar)
GCO
ground communications outlet
GRND
ground control
MCOM
multicom
MF
mandatory frequency
PCL
pilot-controlled lighting
PTAX
pre-taxi clearance
RAMP
ramp/taxi control
RDO
radio
RDR
radar-only frequency
TMA
terminal area (VFR frequency used outside the U.S.)
TWR
control tower
UNIC
unicom
The Navigation abbreviations are:
ILS
Instrument landing system approach
LOC
Localizer approach
LBC
Localizer back course
LDA
Localizer type directional aid approach
SDF
Simplified directional facility approach
Part-time operation, such as for a control tower, is indicated with an aster-
isk (*) to the right of an airport frequency.
The frequencies associated with class B or C airspace, CTA or TMA are
VFR frequencies. Airports which have one of these categories of frequen-
cies also have APR and DEP which are IFR frequencies.
Where required, APR, DEP, CL B, CL C, CTA, and TMA frequencies are
sectorized. That is, a frequency may be used only within a certain range
of radials from a designated reference location. The format for displaying
the sectorization is to show the frequency first, followed by the identifier of
the associated reference point, fol-
lowed next by the associated altitude
restrictions. For example, figure 3-
154 shows that the Orlando
approach control frequency 121.10
MHz is used between the 311° radial
Chapter 3 Basic GPS Operation
3-56
Figure 3-154