Appendix B
 

Acronyms 

A 

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 

B-1 
C 

ATIS—Automatic Terminal Information Service 

ATS—Air Traffic Service 

AWC—Aviation Weather Center 

AWOS—Automated Weather Observing System 

AWSS—Automated Weather Sensor System 

B 

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 

D 

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 

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 

B-2 
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 

F 

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 

G 

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 

B-3 
H 

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 

I 

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 

K 

KIAS—knots indicated airspeed 

KLAX—Los Angeles International Airport 

KLMU—Monroe Regional Airport 

L 

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 

M 

MAA—Maximum Authorized Altitude 

MAHWP—Missed Approach Holding Waypoint 

MAMS—Military Airspace Management System 

MAP—Missed Approach Point 

MCA—Minimum Crossing Altitude 

B-4 
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 

N 

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 

NWS—National Weather Service 

B-5 
O 

OAT—Outside Air Temperature 

OBS—Omni Bearing Selector 

OCS—Obstacle Clearance Surface 

ODP—Obstacle Departure Procedure 

OpSpecs—Operations Specifications 

OROCA—Off-Route Obstruction Clearance Altitude 

OSV—Operational Service Volume 

P 

PA—Precision Approach 

PAR—Precision Approach Radar 

PCG—Positive Course Guidance 

PDC—Pre-Departure Clearance 

PDR—Preferential Departure Route 

PF—Pilot Flying 

PFD—Primary Flight Display 

PI—Principal Inspector 

PIC—Pilot In Command 

PIREP—Pilot Weather Report 

PKI—Public/Private Key Technology 

PM—Pilot Monitoring 

POH—Pilot’s Operating Handbook 

POI—Principle Operations Inspector 

PRM—Precision Runway Monitor 

P-RNAV—European Precision RNAV 

PT—Procedure Turn 

PTP—Point-To-Point 

Q 

QFE—Transition Height 

QNE—Transition Level 

QNH—Transition Altitude 

R 

RA—Resolution Advisory; Radio Altitude 

RAIM—Receiver Autonomous Integrity Monitoring 

RAL—Research Applications Laboratory 

RCO—Remote Communications Outlet 

RJ—Regional Jet 

RNAV—Area Navigation 

RNP—Required Navigation Performance 

RNP AR—Required Navigation Performance Authorization Required 

ROC—Required Obstacle Clearance 

RSP—Runway Safety Program 

RVR—Runway Visual Range 

RVSM—Reduced Vertical Separation Minimums 

RVV—Runway Visibility Value 

RWY—Runway 

RWY WP—Runway Waypoint 

B-6 
S 

SA—Situational Awareness 

SAMS—Special Use Airspace Management System 

SAR—Search and Rescue 

SAS—Stability Augmentation System 

SDF—Simplified Directional Facility 

SDR—Service Difficulty Reports 

SER—Start End of Runway 

SIAP—Standard Instrument Approach Procedure 

SID—Standard Instrument Departure 

SIGMET—Significant Meteorological Information 

SM—Statute Mile 

SMA—Surface Movement Advisor 

SMGCS—Surface Movement Guidance and Control System 

SOIA—Simultaneous Offset Instrument Approaches 

SOP—Standard Operating Procedure 

SPECI—Non-routine (Special) Aviation Weather Report 

SSV—Standard Service Volume 

STAR—Standard Terminal Arrival 

STARS—Standard Terminal Automation Replacement System 

STC—Supplemental Type Certificate 

SUA—Special Use Airspace 

SUA/ISE—Special Use Airspace/In-flight Service Enhancement 

SVFR—Special Visual Flight Rules 

SVGS – Synthetic Vision Guidance System 

SVS—Synthetic Vision System 

SWAP—Severe Weather Avoidance Plan 

SWIM—System Wide Information Management 

T 

TA—Traffic Advisory 

TAA—Terminal Arrival Area 

TACAN—Tactical Air Navigation 

TAF—Terminal Aerodrome Forecast 

TAS—True Air Speed 

TAWS—Terrain Awareness and Warning Systems 

TB—Track Bar 

TCAS—Traffic Alert and Collision Avoidance System 

TCH—Threshold Crossing Height 

TDLS—Terminal Data Link System 

TDZ—Touchdown Zone 

TDZE—Touchdown Zone Elevation 

TEC—Tower En-route Control 

TERPS—Terminal Instrument Procedures 

TFR—Temporary Flight Restriction 

TIBS—Telephone Information Briefing Service 

TIS-B—Traffic Information Service-Broadcast 

TIBS—Telephone Information Briefing Service 

TOC—Top Of Climb 

TOD—Top Of Descent 

TODA—Takeoff Distance Available 

TOGA—Takeoff/Go Around 

B-7 
V 

TORA—Takeoff Runway Available 

TPP—Terminal Procedures Publication 

TRACAB—Terminal Radar Approach Control in Tower Cab 

TSO—Technical Standard Order 

TSOA—Technical Standing Order Authorization 

U 

UHF—Ultra High Frequency 

UNICOM—Universal Communications 

U.S.—United States 

USAF—United States Air Force 

USDA—United States Department of Agriculture 

VCOA—Visual Climb Over Airport / Airfield 

VDA—Vertical Descent Angle 

VDP—Visual Descent Point 

VFR—Visual Flight Rules 

VGSI—Visual Glide Slope Indicator 

VHF—Very High Frequency 

VLJ—Very Light Jet 

VMC—Visual Meteorological Conditions 

VMINI—Minimum Speed–IFR 

VNAV—Vertical Navigation 

VNEI—Never-Exceed Speed-IFR 

VSI—Vertical Speed Indicator 

VOR—Very High-Frequency Omnidirectional Range 

VORTAC—Very High Frequency Omnidirectional Range/Tactical Air Navigation 

VOT—VOR Test Facility Signal 

VPA—Vertical Path Angle 

VREF—Reference Landing Speed 

V/S—Vertical Speed 

VSO—Stalling Speed or the Minimum Steady Flight Speed in the Landing Configuration 

W 

WAAS—Wide Area Augmentation System 

WAC—World Aeronautical Chart 

WAM—Wide Area Multi-lateration 

WP—Waypoint 

Z 

ZFW—Fort Worth Air Route Traffic Control Center 

B-8