Appendix B$_{ }$ Acronyms, Abbreviations, and  NOTAM Contractions  This is a list of common acronyms and abbreviations used in the aviation industry as well as NOTAM contractions. For  a more complete list of contractions used in aviation, see FAA Order JO 7340.2 (as amended). Additional information  regarding NOTAMs can be found at pilotweb.nas.faa.gov/PilotWeb/.  A  A/C —aircraft  A/FD —airport/facility directory  A/G —air to ground  A/HA —altitude/height  AAF —Army Air Field  AAI  —arrival aircraft interval  AAP —advanced automation program  AAR —airport acceptance rate  ABDIS —Automated Data Interchange System Service B  ABN —aerodrome beacon  ABV —above  ACAIS —air carrier activity information system  ACAS —aircraft collision avoidance system  ACC —area control center; Airports Consultants Council  ACCT —accounting records  ACCUM —accumulate  ACD —Automatic Call Distributor  ACDO —Air Carrier District Office  ACF —Area Control Facility  ACFO —Aircraft Certification Field Office  ACFT —aircraft  ACID —aircraft identification  ACI-NA —Airports Council International-North America  ACIP —airport capital improvement plan  ACLS —automatic carrier landing system  ACLT —actual landing time calculated  ACO —Office of Airports Compliance and Field Operations;  Aircraft Certification Office  ACR —air carrier  ACRP —Airport Cooperative Research Program  ACS —Airman Certification Standard  ACT —active, activated, or activity  ADA —air defense area  ADAP —Airport Development Aid Program  ADAS —AWOS data acquisition system  ADCCP —advanced data communications control procedure  ADDA —administrative data  ADF —automatic direction finding  ADI —automatic de-ice and inhibitor  ADIN —AUTODIN service  ADIZ —air defense identification zone  ADJ —adjacent  ADL —aeronautical data-link  ADLY —arrival delay  ADO —airline dispatch office  ADP —automated data processing  ADS —automatic dependent surveillance  ADSIM  —airfield delay simulation model  ADSY —administrative equipment systems  ADTN —Administrative Data Transmission Network  ADTN2000 —Administrative Data Transmission Network  2000  ADVO —administrative voice  ADZD —advised  AEG —Aircraft Evaluation Group  AERA —automated en route air traffic control  AEX —automated execution  AF —airway facilities  AFB —Air Force Base  AFIS —automated flight inspection system  AFP —area flight plan  AFRES —Air Force Reserve Station  AFS —airways facilities sector  AFSFO —AFS field office  AFSFU —AFS field unit  AFSOU —AFS field office unit (standard is AFSFOU)  AFSS —automated flight service station  AFTN —Automated Fixed Telecommunications Network  AGIS —airports geographic information system  AGL —above ground level  AID —airport information desk  AIG —Airbus Industries Group  AIM —Airman’s Information Manual  AlP —airport improvement plan  AIRMET —Airmen’s Meteorological Information  AIRNET —Airport Network Simulation Model  AIS —aeronautical lnformation service  AlT —automated information transfer  ALP —airport layout plan  B-1 