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1. What are the abbreviations for Civil Aviation QDR and QDM?
List of Air Traffic Control Abbreviations (ICAO English) A Amber (North South Main Route) A/A AAL Air to air Above Aerodrome Level Above Airport Level Tangent Airport Lights ABM Abeam ABN Aerodrome beacon ABT ABV AC ACAC ACC ACCID ACFT ACK CAN AD ADA ADF ADIZ ADR ADS ADVS ADZ AEIS AER AERADIO AES AFB AFCS AFIS AFL AFM AFS AFTN About Regarding Above... Altocumulus high cumulus airborne collision avoidance system, airborne collision avoidance system, Area control center, Area control center, Notification of an aircraft accident, Aircraft accident, Aircraft acknowledgement, receipt of Aircraft claim number, Aircraft class number, Aerodrome, Airport Advisory area, Consultation area, Automatic direction setting equipment, Air defense identification zone, Advisory route, Addre, Address, Advisory service, Advisory service, Advice service, Advisory service, Advisory service, Advisory service, Advisory service, Advisory service, Aviation en route information service, Approach end runway, Approach end, Air radio, Aerodrome emergency services. The sentence is: Airport emergency services Air force base Air base Automatic flight control system Aerodrome flight information service Airport flight information service Above field level is higher than scene Affirmative Yes, for Aeronautical fixed service Aeronautical fixed telecommunication network A/G Air to ground Air to ground AGA Aerodromes, air routes and ground aids Airport, routes and ground aids AGL Above ground level AGN Again AIREP is higher than the ground, once again reporting the landing area in the air, landing area Air report ALA Alighting area ALR Alerting alarm ALS Approach lighting system ALT Altitude ALTN Alternate AM Amplitude modulation AMA Area minimum altitude AMDT Amendment AMS Aeronautical mobile service AMSL Above mean sea level AOC Airport obstacle chart AOR Area of responsibility APCH Approach APP Approach control APRX Approximate APU Auxiliary power unit APV Approve ARO Air traffic services reporting office ARP Airport reference point ARQ Automatic error correction ARR Arrival ARSA Airport radar service area ARSR Air route surveillance radar AS Altostratus ASC Ascend to ASDA Accelerate-stop distance available ASPH Asphalt ASR Airport surveillance radar ATA Actual time of arrival ATC Air traffic control Approach lighting system altitude alternate landing, backup amplitude modulation area minimum altitude revision aviation mobile service above average sea level airport obstacle map responsibility area approach control approximate auxiliary power unit approval air traffic service report room airport reference point automatic error correction arrival airport radar service area air route monitoring radar high-level cloud rise available acceleration stop distance asphalt airport monitoring radar actual arrival time air traffic control ATD Actual time of departure ATF Aerodrome traffic frequency airport traffic frequency ATFM Air traffic flow management ATIS Automatic terminal information service ATM Air traffic management air traffic management ATN Aeronautical telecommunication network ATS Air traffic service Air traffic service ATZ Aerodrome traffic zone Airport traffic zone Authorized AUW All up weight Takeoff Full weight AUX Auxiliary AVBL Available Useful, availability AVG Average Average AWY Airway AZM Azimuth azimuth B