Beechcraft C-12C Operator And Technical Reference Manual page 180

TM 1-1510-218-10
Table 3-7. Runway Surface
(Continued)
DISPLAY
HRD Hard surface (includes asphalt,
concrete,
tarmac, brick, and bitumen)
ICE Ice
MAT Steel matting
SHL Shale
SND Sand
SNW Snow
TRF Turf
(4) Airport 4 Page. The APT 4 page is used
to display communication frequencies. Refer to Figure
3-23.
(a) Airport Identifier. An arrow precedes
the identifier if it is the active waypoint.
(b) Frequencies. Refer to Table 3-8 for
frequency abbreviations and their explanations.
KORL
ATIS*127.25
CLR *118.05
GRND*121.40
TWR *118.70
CTAF*118.70
Figure 3-23. APT 4 Page
Table 3-8. Frequency Abbreviations
(Continued)
DISPLAY
AAS Aeronautical advisory service
AFIS Aerodrome
service
APR Approach control
ARVL Arrival
ATF Aerodrome traffic frequency
3-26
EXPLANATION
pavement, sealed,
APT+4
EXPLANATION
flight information
Table 3-8. Frequency Abbreviations
(Continued)
DISPLAY
ATIS Automatic
service
AWOS Automatic
station
CL B Class B (VFR frequency)
CL C Class C (VFR frequency)
CLR Clearance delivery
CTA Control area (VFR frequency)
CTAF Common
frequency
CTR Center (when center is used for
approach/departure control)
DEP Departure control
DIR Director (approach control/radar)
GRND Ground control
MF Mandatory frequency
MCOM Multicom
PCL Pilot controlled lighting
PTAX Pre-taxi clearance
RAMP Ramp/taxi control
RDO Radio
RDR Radar only frequency
TMA Terminal area (VFR frequency)
TRSA Terminal radar service area (VFR
frequency)
TWR Tower
UNIC Unicom
In addition to the standard VHF frequencies, HF
frequencies are shown at airports that utilize HF
communications in the 2000 kHz to 30,000 kHz
frequency band. Airports that have numerous
communication frequencies will have multiple APT 4
pages indicated by APT+4.
Part-time operation is indicated with an asterisk to the
left of the frequency.
Frequencies associated with CL B, CL C, TRSA,
CTA, or TMA are VFR frequencies. Airports that have
one of these categories of frequencies also have APR
and DEP which are IFR frequencies. Where required,
APR, DEP, CL B, CL C, TRSA, CTA, and TMA
frequencies are sectorized. The format for showing
EXPLANATION
terminal information
weather observing
traffic advisory
Refer to Figure 3-24.