| A/D |
APPROACH/DEPARTURE CONTROL |
| A/G |
AIR/GROUND |
| AAS |
AIRPORT ADVISORY SERVICE |
| ACC |
AREA CONTROL CENTER |
| ACP |
AIRLIFT COMMAND POST |
| AFIS |
AERODROME FLIGHT INFO SERVICE |
| APP |
APPROACH CONTROL |
| ARR |
ARRIVAL CONTROL |
| ARSA |
AIRPORT RADAR SERVICE AREA |
| ARTC |
AIR ROUTE TRAFFIC CONTROL |
| ASOS |
AUTOMATED SURFACE OBSERVATION SYSTEM |
| ATIS |
AUTOMATIC TERMINAL INFORMATION SERVICE |
| AWOS |
AUTOMATIC WEATHER OBSERVING STATION |
| CAC |
CENTRALIZED APPROACH CONTROL |
| CLD |
CLEARANCE DELIVERY |
| CNTR |
AIR ROUTE TRAFFIC CONTROL CENTER |
| CTAF |
COMMON TRAFFIC ADVISORY FREQUENCY |
| DEP |
DEPARTURE CONTROL |
| DIR |
DIRECTOR (RADAR/APPROACH CONTROL) |
| EMR |
EMERGENCY |
| FCC |
FLIGHT COMMUNICATIONS CENTER |
| FOC |
FLIGHT OPERATIONS CENTER |
| FSS |
FLIGHT SERVICE STATION |
| GCA |
GROUND CONTROL APPROACH |
| GCCD |
GROUND CONTROL/CLEARANCE DELIVERY |
| GND |
GROUND CONTROL |
| GTE |
GATE CONTROL |
| HEL |
HELICOPTER FREQUENCY |
| INFO |
INFORMATION |
| MISC |
MISCELLANEOUS |
| MULT |
MULTICOM |
| ODP |
PARAMETERS (FRENCH RADIO) |
| OPS |
OPERATIONS |
| PFLT |
PREFLIGHT |
| PMSV |
PILOT TO METRO SERVICE |
| POST |
COMMAND POST |
| PTD |
PILOT TO DISPATCHER |
| RCO |
REMOTE COMMUNICATIONS OUTLET |
| RDO |
RADIO |
| RDR |
RADAR ONLY FREQUENCY |
| RFSS |
REMOTE FLIGHT SERVICE STATION |
| RMP |
RAMP CONTROL |
| SFA |
SINGLE FREQUENCY APPROACH |
| TCA |
TERMINAL CONTROL AREA |
| TRSA |
TERMINAL RADAR SERVICE AREA |
| TWR |
TOWER |
| UNIC |
UNICOM OR CTAF/UNICOM |
