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Rev 2 Apr/2004 KMD 250 Pilot's Guide
Section 1
Basic Operation
User Waypoints
Table 1-3 Comm Frequency Types
ATIS Automatic Terminal Information Service
PTAX Pre-Taxi Clearance
CLR Clearance Delivery
GRND Ground Control
TWR Tower
GCO Ground Communication Outlet
UNIC Unicom
MCOM Multicom
CL B Class B Airspace (VFR Frequency)
CL C Class C Airspace (VFR Frequency)
TRSA Terminal Radar Service Area
APR Approach
DEP Departure
CTR Center
ARVL Arrival
AWOS Automated Weather Observation System
ASOS Automated Surface Observation System
CTA Control Area (VFR frequency used outside U.S.)
DIR Director (approach control/radar)
TMA Terminal Area (VFR frequency used outside U.S.)
RDR Radar-Only Frequency
RDO Radio
AAS Aeronautical Advisory Service
AFIS Aerodrome Flight Information Service
ATF Aerodrome Traffic Frequency
CTAF Common Traffic Advisory Frequency
MF Mandatory Frequency
ILS Instrument Landing System
LOC Localizer Approach
LBC Localizer Back Course
LDA Localizer Type Directional Aid Approach
SDF Simplified Directional Facility Approach
IGS Instrument Guidance System (used outside U.S. only)