Definitions and Acronyms  Section 9  1 20 9.2_SMSM_201904  Originally published April 2019  Uncontrolled copy when downloaded  9.2  Acronyms  ADS-B Automatic Dependent Surveillance – Broadcast  AJG  Management Services  AJI  Safety and Technical Training  AMASS  Airport Movement Area Safety System  AMS  Acquisition Management System  AOV  Air Traffic Safety Oversight Service  ARSR  Air Route Surveillance Radar  ARTCC  Air Route Traffic Control Center  ARTS   Automated Radar Terminal System  ASDE   Airport Surface Detection Equipment  ASR  Airport Surveillance Radar  ATC  Air Traffic Control  ATCRBS  Air Traffic Control Radar Beacon System  ATM  Air Traffic Manager / Air Traffic Management  ATO  Air Traffic Organization  ATO-SG  Air Traffic Organization Safety Guidance  ATSAP  Air Traffic Safety Action Program  CAP  Corrective Action Plan  CAT  Category  COMM  Communications  COO  Chief Operating Officer  CSA  Comparative Safety Assessment  FAA  Federal Aviation Administration  HAW  Hazard Analysis Worksheet  HMI  Hazardously Misleading Information  ICAO  International Civil Aviation Organization  IMC  Instrument Meteorological Conditions  IOA  Independent Operational Assessment  LOB  Line of Business  MODES  Mode Select Beacon System  NAS  National Airspace System  NATCA  National Air Traffic Controllers Association  NAV  Navigation  OCS  Obstacle Clearance Surface  OHA  Operational Hazard Assessment  OSA  Operational Safety Assessment  PHL  Preliminary Hazard List  POC  Point of Contact  PRD  Program Requirements Document  RA  Resolution Advisory 