Appendix B
Acronyms
AAC—Aircraft Administration Communications
AAUP—Attention All Users Page
AC—Advisory Circular
ACARS—Aircraft Communications Addressing and Reporting System
ADCs—Air Data Computer
ADDS—Aviation Digital Data Services
ADF—Automatic Direction Finder
ADS—Automatic Dependent Surveillance
ADS-B—Automatic Dependent Surveillance-Broadcast
AEG—Aircraft Evaluation Group
A/FD—Airport/Facility Directory section of the Chart Supplement (CS)
AFM—Aircraft Flight Manual
AFMS—Aircraft Flight Manual Supplements
AFS—Aircraft Flight Safety
AFS—Flight Standards Service
AFSS—Automated Flight Service Station
AGL—Above Ground Level
AIM—Aeronautical Information Manual
AIP—Aeronautical Information Publication
AIR—Aircraft Certification Service
AIRMET—Airman’s Meteorological Information
ALT ACQ—Altitude Acquire
ALT Hold—Altitude Hold
ANP—Actual Navigation Performance
AOC—Aircraft Operational Communications
APT WP—Airport Waypoint
APV—Approach with Vertical Guidance
ARINC—Aeronautical Radio Incorporated
A-RNAV—Advanced Area Navigation
ARTCC—Air Route Traffic Control Center
ARTS—Automated Radar Terminal System
ASDA—Accelerate-Stop Distance Available
ASDE-X—Airport Surface Detection Equipment-Model X
A-SMGCS—Advanced Surface Movement Guidance and Control System
ASOS—Automated Surface Observing System
ASR—Airport Surveillance Radar
ASRS—Aviation Safety Reporting System
ATA—Air Transport Association
ATC—Air Traffic Control
ATCAA—Air Traffic Control Assigned Airspace
ATCRBS—Air Traffic Control Radar Beacon System
ATCS—Air Traffic Control Specialist
ATD—Along-Track Distance
ATIS—Automatic Terminal Information Service
ATS—Air Traffic Service
AWC—Aviation Weather Center
AWOS—Automated Weather Observing System
AWSS—Automated Weather Sensor System
Baro-VNAV—Barometric Vertical Navigation
B-RNAV—European Basic RNAV
CAT—Category
CDI—Course Deviation Indicator
CDL—Configuration Deviation List
CENRAP—Center Radar ARTS Processing
CFA—Controlled Firing Areas
CFIT—Controlled Flight Into Terrain
CFR—Code of Federal Regulations
CNF—Computer Navigation Fix
COP—Changeover Point
COTS—Commercial Off-The-Shelf
CRC—Cyclic Redundancy Check
CS—Chart Supplement
CTAF—Common Traffic Advisory Frequency
CVFP—Charted Visual Flight Procedure
CWAS—Center Weather Advisories
DA—Density Altitude; Decision Altitude
D-ATIS—Digital Automatic Terminal Information Service
D-CS—Digital Chart Supplement
DDA—Derived Decision Altitude
DEM—Digital Elevation Model
DER—Departure End of the Runway
DF—Direction Finding
DH—Decision Height
DME—Distance Measuring Equipment
DOD—Department of Defense
DOT—Department of Transportation
DPs—Departure Procedures
DRVSM—Domestic Reduced Vertical Separation Minimums
DUATS—Direct User Access Terminal System
DVA—Diverse Vector Area
E/D—End of Decent
EDCT—Expect Departure Clearance Time
EFAS—En-Route Flight Advisory Service
EFB—Electronic Flight Bag
EFC—Expect Further Clearance
EFV—Enhanced Flight Visibility
EFVS—Enhanced Flight Vision System
EGPWS—Enhanced Ground Proximity Warning System
EOPs—Engine Out Procedures
EOVM—Emergency Obstruction Video Map
ER-OPS—Extended Range Operations
ETA—Estimated Time of Arrival
EV—Enhanced Vision
EVO—Equivalent Visual Operations
EWINS—Enhanced Weather Information System
FAA—Federal Aviation Administration
FAF—Final Approach Fix
FAP—Final Approach Point
FB—Fly-By
FCC—Federal Communications Commission
FD—Flight Director
FDP—Flight Data Processing
FE—Flight Engineer
FIR—Flight Information Region
FIS—Flight Information System
FIS-B—Flight Information Services–Broadcast
FISDL—Flight Information Services Data Link
FL—Flight Level
FL CHG—Flight Level Change
FLIR—Forward Looking Infra-Red
FMC—Flight Management Computer
FMS—Flight Management System
FO—Fly-Over
FOM—Flight Operations Manual
FPA—Flight Path Angle
FPV—Flight Path Vector
FSB—Flight Standardization Board
FSDO—Flight Standards District Office
FSL—NOAA Forecast Systems Laboratory
FSS—Flight Service Station
GBAS—Ground-Based Augmentation System
GCA—Ground Controlled Approach
GCO—Ground Communication Outlet
GDP—Ground Delay Programs
GDPE—Ground Delay Program Enhancements
GLS—Ground Based Augmentation System Landing System
GNSS—Global Navigation Satellite System
GPS—Global Positioning System
GPWS—Ground Proximity Warning System
G/S—Glide Slope
GS—Ground Speed
GWS—Graphical Weather Service
HAA—Height Above Airport
HAR—High Altitude Redesign
HAT—Height Above Touchdown
HAZMAT—Hazardous Materials
HDD—Head-Down Display
HF—High Frequency
HGS—Head-up Guidance System
HIWAS—Hazardous In-flight Weather Advisory Service
HSI—Horizontal Situation Indicator
HUD—Head-up Display
IAF—Initial Approach Fix
IAP—Instrument Approach Procedure
IAS—Indicated Air Speed
ICAO—International Civil Aviation Organization
IF—Intermediate Fix
IFR—Instrument Flight Rules
IIMC—Inadvertent Instrument Meteorological Condition
ILS—Instrument Landing System
IMC—Instrument Meteorological Conditions
INS—Inertial Navigation System
IOC—Initial Operational Capability
IRU—Inertial Reference Unit
KIAS—knots indicated airspeed
KLAX—Los Angeles International Airport
KLMU—Monroe Regional Airport
LAAS—Local Area Augmentation System
LAHSO—Land And Hold Short Operations
LDA—Localizer-type Directional Aid; Landing Distance Available
LF—Low Frequency
LNAV—Lateral Navigation
LOC—Localizer
LOM—Locator Outer Marker
LPV—Localizer Performance with Vertical Guidance
LTP—Landing Threshold Point
LVL CHG—Level Change
MAA—Maximum Authorized Altitude
MAHWP—Missed Approach Holding Waypoint
MAMS—Military Airspace Management System
MAP—Missed Approach Point
MCA—Minimum Crossing Altitude
MDA—Minimum Descent Altitude
MDH—Minimum Descent Height
MEA—Minimum En-route Altitude
MEL—Minimum Equipment List
METAR—Aviation Routine Weather Report
MF—Medium Frequency
MIA—Minimum IFR Altitude
MLS—Microwave Landing System
MMWR—Millimeter Wave Radar
MNPS—Minimum Navigation Performance Specifications
MOA—Military Operations Area
MOCA—Minimum Obstruction Clearance Altitude
MOPS—Minimum Operational Performance Standards
MORA—Minimum Off-Route Altitude
MRA—Minimum Reception Altitude
MSA—Minimum Safe Altitude
MSAW—Minimum Safe Altitude Warning
MSL—Mean Sea Level
MTA—Minimum Turning Altitude
MTR—Military Training Route
MVA—Minimum Vectoring Altitude
NA—Not Authorized
NACO—National Aeronautical Charting Office
NAS—National Airspace System
NASA—National Aeronautics and Space Administration
NAT—North Atlantic
NAVAID—Navigational Aid
NCAR—National Center for Atmospheric Research
NDB—Non-Directional Beacon
NextGen—Next Generation Air Transportation System
NFDC—National Flight Data Center
NGA—National Geospatial- Intelligence Agency
NM—Nautical Mile
NMAC—Near Mid-Air Collision
NNEW—Next Generation Network-Enabled
NOAA—National Oceanic and Atmospheric Administration
NO A/G—No Air-to-Ground Communication
NOPAC—North Pacific
NOTAM—Notice to Airmen
NOZ—Normal Operating Zone
NPA—Non-Precision Approach
NRR—Non-Restrictive Routing
NRS—National Reference System
NTAP—Notice to Airmen Publication
NTSB—National Transportation Safety Board
NTZ—No Transgression Zone
NVS—NAS voice switch