AIM 7110.65R CHG 2 8/15/19 3/15/07 12/31/20 Abbreviation/ Acronym Meaning DME....... Distance Measuring Equipment DME/N ..... Standard DME DME/P ..... Precision DME DOD....... Department of Defense DP ........ Instrument Departure Procedure DPU ....... Data Processor Unit DRT ....... Diversion Recovery Tool DRVSM .... Domestic Reduced Vertical Separation Minimum DVA ....... Diverse Vector Area DVFR ...... Defense Visual Flight Rules DVRSN .... Diversion EDCT ...... Expect Departure Clearance Time EFAS ...... En Route Flight Advisory Service EFV ....... Enhanced Flight Visibility EFVS ...... Enhanced Flight Vision System ELT........ Emergency Locator Transmitter EMAS ..... Engineered Materials Arresting System EPE ....... Estimate of Position Error ESV ....... Expanded Service Volume ETA ....... Estimated Time of Arrival ETD ....... Estimated Time of Departure ETE ....... Estimated Time En Route EWINS ..... Enhanced Weather Information System EWR....... Newark International Airport FA......... Area Forecast FAA ....... Federal Aviation Administration FAF........ Final Approach Fix FAWP ...... Final Approach Waypoint FB......... Fly − by FCC ....... Federal Communications Commission FD ........ Flight Director System FDC ....... Flight Data Center FDE ....... Fault Detection and Exclusion FIR ........ Flight Information Region FIS ........ Flight Information Service FISDL ..... Flight Information Services Data Link FLIP ....... Flight Information Publication FMS ....... Flight Management System FO ........ Fly − over FPA........ Flight Path Angle FPV ....... Flight Path Vector FPNM ...... Feet Per Nautical Mile FSDO ...... Flight Standards District Office FSS........ Flight Service Station GBAS ...... Ground Based Augmentation System GEO ....... Geostationary Satellite Abbreviation/ Acronym Meaning GLS ....... GBAS Landing System GNSS ...... Global Navigation Satellite System GNSSP ..... Global Navigation Satellite System Panel GPS ....... Global Positioning System GRI........ Group Repetition Interval GSD ....... Geographical Situation Display GUS ....... Ground Uplink Station HAT ....... Height Above Touchdown HDTA...... High Density Traffic Airports HEMS ..... Helicopter Emergency Medical Services HIRL ...... High Intensity Runway Lights HRR ....... Helicopter Rapid Refueling Procedures HUD....... Head − Up Display Hz......... Hertz IAF ........ Initial Approach Fix IAP ........ Instrument Approach Procedure IAS ........ Indicated Air Speed IAWP ...... Initial Approach Waypoint ICAO ...... International Civil Aviation Organization IF ......... Intermediate Fix IFR ........ Instrument Flight Rules ILS ........ Instrument Landing System ILS/PRM . . . Instrument Landing System/Precision Runway Monitor IM......... Inner Marker IMC ....... Instrument Meteorological Conditions InFO ....... Information For Operators INS ........ Inertial Navigation System IOC........ Initial Operational Capability IR ......... IFR Military Training Route IRU........ Inertial Reference Unit ITWS ...... Integrated Terminal Weather System JFK........ John F. Kennedy International Airport kHz........ Kilohertz LAA ....... Local Airport Advisory LAAS ...... Local Area Augmentation System LAHSO .... Land and Hold Short Operations LAWRS .... Limited Aviation Weather Reporting Station LDA ....... Localizer Type Directional Aid LDA/PRM . . Localizer Type Directional Aid/Precision Runway Monitor LGA ....... LaGuardia Airport LIRL ....... Low Intensity Runway Lights LLWAS..... Low Level Wind Shear Alert System LLWAS NE . Low Level Wind Shear Alert System Network Expansion Abbreviations/Acronyms Appendix 3 − 2