| A | B |
|---|
| ABN | AIRPORT BEACON |
| ABV | ABOVE |
| ACC | Area Control Center |
| ACCUM | ACCUMULATE |
| ACFT | AIRCRAFT |
| ACR | AIR CARRIER |
| ACT | ACTIVE |
| ADJ | ADJACENT |
| ADZD | ADVISED |
| AFD | AIRPORT FACILITY DIRECTORY |
| AGL | ABOVE GROUND LEVEL |
| ALS | APPROACH LIGHTING SYSTEM |
| ALT | ALTITUDE |
| ALTM | ALTIMETER |
| ALTN | ALTERNATE |
| ALTNLY | ALTERNATELY |
| ALSTG | ALTIMETER SETTING |
| AMDT | AMENDMENT |
| AMGR | AIRPORT MANAGER |
| AMOS | Automatic Meteorological Observing System FAA |
| AP | AIRPORT |
| APCH | APPROACH |
| AP LGT | AIPORT LIGHTING |
| APP | APPROACH CONTROL |
| ARFF | AIRCRAFT RESCUE AND FIRE FIGHTING |
| ARR | ARRIVE/ARRIVAL |
| ASOS | Automatic Surface Observing System FAA |
| ASPH | ASPHALT |
| ATC | AIR TRAFFIC CONTROL |
| ATCC | Air Traffic Control Command Center FAA |
| ATIS | Automatic Terminal Information Service ICAO |
| AUTOB | Automatic Weather Reporting System FAA |
| AUTH | AUTHORITY |
| AVBL | AVAILABLE |
| AWOS | AUTOMATIC WEATHER OBSERVING/REPORTING SYSTEM |
| AWY | AIRWAY |
| AZM | AZIMUTH |
| BA FAIR | BRAKING ACTION FAIR |
| BA NIL | BRAKING ACTION NIL |
| BA POOR | BREAKING ACTION POOR |
| BC | BACK COURSE |
| BCN | BEACON |
| BERM | SNOWBANK CONTAING EARTH/GRAVEL |
| BLW | BELOW |
| BND | BOUND |
| BRG | BEARING |
| BYD | BEYOND |
| CAAS | CLASS A AIRSPACE |
| CAT | CATEGORY |
| CBAS | CLASS B AIRSPACE |
| CBSA | CLASS B SURFACE AREA |
| CCAS | CLASS C AIRSPACE |
| CCLKWS | COUNTERCLOCKWISE |
| CCSA | CLASS C SURFACE AREA |
| CD | CLEARANCE DELIVERY |
| CDAS | CLASS D AIRSPACE |
| CDSA | CLASS D SURFACE AREA |
| CEAS | CLASS E AIRSPACE |
| CESA | CLASS E SURFACE AREA |
| CFR | CODE OF FEDERAL REGUALTIONS |
| CGAS | CLASS G AIRSPACE |
| CHAN | CHANNEL |
| CHG | CHANGE OR MODIFICATION |
| CIG | CEILING |
| CK | CHECK |
| CL | CENTRE INE |
| CLKWS | CLOCKWISE |
| CLR | CLEARANCE, CLEAR, CLEARED |
| CLSD | CLOSED |
| CMB | CLIMB |
| CMSND | COMMISSIONED |
| CNL | CANCEL |
| CNTRLN | CENTERLINE |
| COM | COMMUNICATIONS |
| CONC | CONCRETE |
| CPD | COUPLED |
| CRS | COURSE |
| CTC | CONTACT |
| CTL | CONTROL |
| DALGT | DAYLIGHT |
| DCMSN | DECOMMISSION |
| DCMSND | DECOMMISSIONED |
| DCT | DIRECT |
| DEGS | DEGREES |
| DEP | DEPART, DEPARTURE |
| DEP PROC | DEPARTURE PROCEDURE |
| DH | DECISION HEIGHT |
| DISABLD | DISABLED |
| DIST | DISTANCE |
| DLA | DELAY OR DELAYED |
| DLT | DELETE |
| DLY | DAILY |
| DME | DISTANCE MEASURING EQUIPMENT |
| DMSTN | DEMONSTRATION |
| DP | DEWPOINT TEMPERATURE |
| DRFT | SNOWBANK/SCAUSED BY WIND ACTION |
| DSPLCED | DISPLACED |
| E | EAST |
| EB | EASTBOUND |
| EFAS | EN ROUTE FLIGHT ADVISORY SERVICE |
| ELEV | ELEVATION |
| ENG | ENGINE |
| ENRT | EN ROUTE |
| ENTR | ENTIRE |
| EXC | EXCEPT |
| FAC | FACILITY |
| FAF | FINAL APPROACH FIX |
| FAN MKR | FAN MARKER |
| FDC | FLIGHT DATE CENTER |
| FI/T | FLIGHT INSPECTION TEMPORARY |
| FL/P | FLIGHT INSPECTION PERMANENT |
| FM | FROM |
| FNA | FINAL APPROACH |
| FPM | FEET PER MINUTE |
| FREQ | FREQUENCY |
| FRH | FLY RUNWAY HEADING |
| FRI | FRIDAY |
| FRZN | FROZEN |
| FSS | AUTOMATED/FLIGHT SERVICE STATION |
| FT | FOOT, FEET |
| GC | GROUND CONTROL |
| GCA | GROUND CONTROL APPROACH |
| GVT | GOVERNMENT |
| GP | GLIDE PATH |
| GPS | GLOBAL POSITIONING SYSTEM |
| GRVL | GRAVEL |
| HAA | HEIGHT ABOVE AIRPORT |
| HAT | HEIGHT ABOVE TOUCHDOWN |
| HDG | HEADING |
| HEL | HELICOPTER |
| HELI | HELIPORT |
| HIRL | HIGH INTENSITY RUNWAY LIGHTS |
| HIWAS | HAZARDOUS INFLIGHT WEATHER ADVISORY SERVICE |
| HLDG | HOLDING |
| HOL | HOLIDAY |
| HP | HOLDING PATTERN |
| HR | HOUR |
| IAF | INITIAL APPROACH FIX |
| IAP | INSTRUMENT APPROACH PROCEDURE |
| INBND | INBOUND |
| ID | IDENTIFICATION |
| IDENT | IDENTIFY, IENTIFIER, IDENTIFICATION |
| IF | INTERMEDIATE FIX |
| ILS | INSTRUMENTAL LANDING SYSTEM |
| IM | INNER MARKER |
| IMC | INSTRUMENT METEOROLOGICAL CONDITIONS |
| IN | INCHES |
| INDEFLY | INDEFINITELY |
| INFO | INFORMATION |
| INOP | INOPERATIVE |
| INSTR | INSTRUMENT |
| INT | INTERSECTION |
| INTL | INTERNATIONAL |
| INTST | INTENSITY |
| IR | ICE ON RUNWAY |
| KT | KNOTS |
| L | LEFT |
| LAA | LOCAL AIPORT ADVISORY |
| LAT | LATITUDE |
| LAWRS | LIMITED AVIATION WEATHER REPORTING STATION |
| LB | POUND |
| LC | LOCAL CONTROL |
| LOC | LOCAL, LOCALLY, LOCATION |
| LCTD | LOCATED |
| LDA | LOCALIZER TYPE DIRECTIONAL AID |
| LGT | LIGHT OR LIGHTING |
| LGTD | LIGHTED |
| LIRL | LOW INTENSITY RUNWAY LIGHTS |
| LLWAS | LOW LEVEL WIND SHEAR ALERT SYSTEM |
| LM | COMPASS LOCATOR AT ILS MIDDLE MARKER |
| LDG | LANDING |
| LLZ | LOCALIZER |
| LO | COMPASS LOCATOR AT ILS OUT MARKER |
| long | lONGITUDE |
| LRN | LONG RANGE NAVIGATION |
| LSR | LOOSE SNOW ON RUNWAY |
| LT | LEFT TURN |
| MAG | MAGNETIC |
| MAINT | MAINTAIN, MAINTENANCE |
| MALS | MEDIUM INTESNITY APPROACH LIGHT SYSTEM |
| MALSF | MEDIUM INTENSITY APPROACH LIGHT SYSTEM/SEQUENCED FLASHERS |
| MALSR | MEDIUM INTENSITY APPROACH LIGHT SYSTEM/WITH RUNWAY ALIGNMENT INDICATOR LIGHTS |
| MAPT | MISSED APPROACH POINT |
| MCA | MINIMUM CROSSING ALTITUDE |
| MDA | MINIMUM DESCENT ALTITUDE |
| MEA | MINIMUM EN ROUTE ALTITUDE |
| MED | MEDIUM |
| MIN | MINUTE |
| MIRL | MEDIUM INTENSITY RUNWAY LIGHTS |
| MKR | MARKER |
| MLS | MICROWAVE LANDING SYSTEM |
| MM | MIDDLE MARKER |
| MNM | MINIMUM |
| MNT | MONITOR |
| MOC | MINIMUM OBSTRUCTION CLEARANCE |
| MON | MONDAY |
| MRA | MINIMUM RECEPTION ALTITUDE |
| MSA | MINIMUM SAFE ALTITUDE OR SECTOR ALTITUDE |
| MSAW | MINIMUM SAFE ALTITUDE WARNING |
| MSG | MESSAGE |
| MSL | MEAN SEA LEVEL |
| MU | MU METERS |
| MUD | MUD |
| MUNI | MUNICIPAL |
| N | NORTH |
| NA | NOT AUTHORIZED |
| NAV | NAVIGATION |
| NB | NORTHBOUND |
| NDB | NONDIRECTIONAL RADIO BEACON |
| NE | NORTHEAST |
| NG | NIGHT |
| NM | NAUTICALMILE |
| NMR | NAUTICAL MILE RADIUS |
| NONSTD | NONSTANDARD |
| NOPT | NO PROCEDURE TURN REQUIRED |
| NR | NUMBER |
| NTAP | NOTICE TO AIRMEN PUBLICATION |
| NW | NORTHWEST |
| OBSC | OBSCURED |
| OBST | OBSTRUCTION/OBSTACLE |
| OOM | OUTER MARKER |
| OPR | OPERATE |
| OPS | OPERATIONS |
| ORIG | ORIGINAL |
| OTS | OUT OF SERVICE |
| OVR | OVER |
| PAEW | PERSONNEL AND EQUIPMENT WORKING |
| PAX | PASSENGER |
| PAPI | PRECISION APPROACH PATCH INDICATOR |
| PAR | PRECISION APPROACH RADAR |
| PARL | PARALLEL |
| PAT | PATTERN |
| PCL | PILOT CONTROLLED LIGHTING |
| PERM | PERMANENT |
| PJE | PARACHUTE JUMPING EXERCISE |
| PLA | PRACTICE LOW APPROACH |
| PLW | PLOW/PLOWED |
| PN | PRIOR NOTICE REQUIRED |
| PPR | PRIOR PERMISSION REQUIRED |
| PRN | PSUEDO RANDOM NOISE |
| PROC | PROCEDURE |
| PROP | PROPELLER |
| PSR | PACKED SNOW ON RUNWAY1 |
| PTCHY | PATCHY |
| PTN | PROCEDURE TURN |
| PVT | PRIVATE |
| RAIL | RUNWAY ALIGNMENT INDICATOR LIGHTS |
| RAMOS | REMOTE AUTOMATIC METEOROLIGICAL OBSERVING SYSTEM |
| RCAG | REMOTE COMMUNICATION AIR/GROUND FACILITY |
| RCL | RUNWAY CENTER LINE |
| RCLL | RUNWAY CENTER LINE LIGHTS |
| RCO | REMOTE COMMUNICATION OUTLET |
| REC | RECEIVE |
| REIL | RUNWAY END IDENTIFIER LIGHTS |
| RELCTD | RELOCATED |
| REP | REPORT |
| RLLS | RUNWAY LEAD-IN LIGHT SYSTEM |
| RMNDR | REMAINDER |
| RMK | REMARK |
| RNAV | AREA NAVIGATION |
| RPLC | REPLACE |
| RQRD | REQUIRED |
| RRL | RUNWAY REMAINING LIGHTS |
| RSR | EN ROUTE SURVEILLANCE RADAR |
| RSVN | RESERVATION |
| RT | RIGHT TURN |
| RTE | ROUTE |
| RTR | REMOTE TRANSMITTER/RECEIVER |
| RTS | RETURN TO SERVICE |
| RUF | ROUGH |
| RVR | RUNWAY VISUAL RANGE |
| RVRM | RUNWAY VISUAL RANGE MIDPOINT |
| RVRR | RUNWAY VISUAL RANGE ROLLOUT |
| RVRT | RUNWAY VISUAL RANGE TOUCHDOWN |
| RWY | RUNWAY |
| S | SOUTH |
| SA | SAND |
| SAT | SATURDAY |
| SAWRS | SUPPLEMENTARY AVIATION WEATHER REPORTING STATION |
| SB | SOUTHBOUND |
| SDF | SIMPLIFIED DIRECTIONAL FACILITY |
| SE | SOUTHEAST |
| SFL | SEQUENCE FLASHING LIGHTS |
| SIMUL | SIMULTANEIOUSLY |
| SIR | PACKED SNOW & ICE ON RUWNAY |
| SKED | SCHEDULED |
| SLR | SLUSH ON RUNWAY |
| SN | SNOW |
| SNBNK | SNOWBACK (CAUSED BY PLOWING) |
| SNGL | SINGLE |
| SPD | SPEED |
| SSALF | SIMPLIFIED SHORT APPROACH LIGHTING W/SEQUENCE FLASHERS |
| SSALR | SIMPLIFIED SHORT APPROACH LIGHTING W/RUNWAY ALIGNMENT INDICATOR LIGHTS |
| SSALS | SIMPLIFIED SHORT APPROACH LIGHTING SYSTEM |
| SSR | SECONDARY SURVEILLANCE RADAR |
| STA | STRAIGHT-IN APPROACH |
| STAR | STANDARD TERMINAL ARRIVAL |
| SUN | SUNDAY |
| SVC | SERVICE |
| SVN | SATELLITE VEHICLE NUMBER |
| SW | SOUTHWEST |
| SWEPT | SWEPT |
| T | TEMPERATURE |
| TACAN | TACTICAL AIR NAVIGATIONAL AID |
| TAR | TERMINAL AREA SURVEILLANCE RADAR |
| TDWR | TERMINAL DOP0PLER WEATHER RADAR |
| TDZ | TOUCHDOWN ZONE |
| TDZ LGT | TOUCHDOWN ZONE LIGHTS |
| TEMPO | TEMPORARY |
| TFC | TRAFFIC |
| TFR | TEMPORARY FLIGHT RESTRICTION |
| TGL | TOUCH & GO LANDING |
| THN | THIN |
| THR | THRESHOLD |
| THRU | THROUGH |
| THU | THURSDAY |
| TIL | UNTIL |
| TKOF | TAKEOFF |
| TM | TRAFFIC MANAGEMENT |
| TMPA | TRAFFIC MANAGEMENT PROGRAM ALERT |
| TRML | TERMINAL |
| TRNG | TRAINING |
| TRSN | TRANSITION |
| TSNT | TRANSIENT |
| TUE | TUESDAY |
| TWR | AIRPORT CONTROL TOWER |
| TWY | TAXIWAY |
| UAV | UNMANNED AIR VEHICLES |
| UFN | UNTIL FURTHER NOTICE |
| UNAVBL | UNAVAILABLE |
| UNLGTD | UNLIGHTED |
| UNMKD | UNMARKED |
| UNMNT | UNMONITORED |
| UNREL | UNRELIABLE |
| UNUSBL | UNUSABLE |
| VASI | VISUAL APPROACH SLOPE INDICATOR SYSTEM |
| VDP | VISUAL DESCENT POINT |
| VIA | BY WAY OF |
| VICE | INSTEAD/VERSUS |
| VIS | VISIBILITY |
| VMC | VISUAL METEOROLIGICAL CONIDITIONS |
| VOL | VOLUME |
| VOR | VHF OMNI-DIRECTIONAL RADIO RANGE |
| VORTAC | VOR/TACAN |
| W | WEST |
| WB | WESTBOUND |
| WED | WEDNESDAY |
| WEF | WITH EFFECT FROM |
| WI | WITHIN |
| WIE | WITH IMMEDIATE EFFECT |
| WKDAYS | MONTH THROUGH FRIDAY |
| WKEND | SATURDAY & SUNDAY |
| WND | WIND |
| WPT | WAYPOINT |
| WSR | WEST SNOW ON RUNWAY |
| WTR | WATER ON RUNWAY |
| WX | WEATHER--- |
| ADC | AIR DATA COMPUTER |
| ADF | AUTOMATIC DIRECTION FINDING |
| AFTN | AERONAUTICAL FIXED TELECOMMUNICATION NETWORK |
| AIC | AERONAUTICAL INFORMATION CIRCULAR |
| AIP | AERONAUTICAL INFORMATION PUBLICATION |
| AIS | AERONAUTICAL INFORMATION SERVICE |
| ARINC | AERONAUTICAL RADIO INCORPORATED |
| ARO | AIRPORT RESERVATION OFFICE |
| ASR | AVIATION SAFETY REPORT |
| ATA | ACTUAL TIME OF ARRIVAL |
| ATC | AIR TRAFFIC CONTROL |
| ATM | AIR TRAFFIC MANAGEMENT |
| ATS | AIR TRAFFIC SERVICE |
| AWPR | AUTOMATIC WAY-POINT REPORTING |
| BOTA | BREST OCEANIC TRANSITION AREA |
| BRNAV | BASIC AREA NAVIGATION |
| CAR | CARIBBEAN |
| CDU | CONTROL DISPLAY UNIT |
| CFR | CODE OF FEDERAL REGULATIONS |
| CMA | CENTRAL MONITORING AGENCY |
| CSR | CUSTOMER SERVICE REPRESENTATIVE |
| CTA | CONTROL AREA |
| DCPC | DIRECT CONTROLLER/PILOT COMMUNICATIONS |
| DME | DISTANCE MEASURING EQUIPMENT |
| DOT | DEPARTMENT OF TRANSPORTATION |
| DR | DEAD RECKONING |
| ELT | EMERGENCY LOCATOR TRANSMITTER |
| ETA | ESTIMATED TIME OF ARRIVAL |
| ETOPS | EXTENDED RANGE TWIN-ENGINE AIRCRAFT OPERATIONS |
| ETP | EQUAL TIME POINT |
| EUR | EUROPE |
| FAA | FEDERAL AVIATION ADMINISTRATION |
| FAR | FEDERAL AVIATION REGULATION |
| FBO | FIXED BASE OPERATOR |
| FDE | FAULT DETECTION AND EXCLUSION |
| FIR | FLIGHT INFORMATION REGION |
| FLAS | FLIGHT LEVEL ALLOCATION SCHEME |
| FMC | FLIGHT MANAGEMENT COMPUTER |
| FMS | FLIGHT MANAGEMENT SYSTEM |
| GLONASS | GLOBAL ORBITING NAVIGATION SATELLITE SYSTEM |
| GMU | GPS - MONITORING UNIT |
| GNE | GROSS NAVIGATION ERROR |
| GNSS | GLOBAL NAVIGATION SATELLITE SYSTEM |
| GP | GENERAL PURPOSE |
| GPS | GLOBAL POSITIONING SYSTEM |
| HF | HIGH FREQUENCY |
| HMU | HEIGHT MONITORING UNIT |
| HSI | HORIZONTAL SITUATION INDICATOR |
| IATA | INTERNATIONAL AIR TRANSPORT ASSOCIATION |
| ICAO | INITERNATIONAL CIVIL AVIATION ORGANIZATION |
| IFR | INSTRUMENT FLIGHT RULES |
| INS | INERTIAL NAVIGATION SYSTEM |
| IRS | INERTIAL REFERENCE SYSTEM |
| JAA | JOINT AVIATION AUTHORITIES |
| KHZ | KIOHERTZ |
| LAT | LATITUDE |
| LONG | LONGITUDE |
| LRNS | LONG RANGE NAVIGATION SYSTEM |
| MASPS | MINIMUM AIRCRAFT SYSTEM PERFORMANCE SPECIFICATION |
| MEL | MINIMUM EQUIPMENT LIST |
| MET | METEORLOGICAL |
| MHZ | MEGAHERTZ |
| MNPS | MINIMUM NAVIGATION PERFORMANCE SPECIFICATION |
| MTT | MINIMUM TIME TRACK |
| NAM | NORTH AMERICA |
| NAR | NORTH AMERICA ROUTE |
| NAT | NORTH ATLANTIC |
| NAT SPG | NORTH ATLANTIC SYSTEMS PLANNING GROUP |
| NDB | NON DIRECTIONAL BEACON |
| NM | NAUTICAL MILE |
| NOAA | NATIONAL OCEANIC AND ATMOSPHERICADMINISTRATION |
| NOTAM | NOTICE TO AIRMEN |
| OAC | OCEANIC AREA CONTROL CENTER |
| OCA | OCEANIC CONROL AREA |
| OTS | ORGANIZED TRACK SYSTEM |
| PANS | PROCEDURES FOR AIR NAVIGATION SERVICES |
| PIC | PILOT IN COMMANCE |
| PRM | PREFERRED ROUTE MESSAGE |
| PTS | POLAR TRACK STRUCTURE |
| RA | RESOLUTION ADVISORY |
| RAIM | RECEIVER-AUTONOMOIUS INTEGRITY MONITORING |
| RMI | REMOTE MAGNETICINDICATOR |
| RNP | REQUIRED NAVIGATION PERFORMANCE |
| RON | REMAIN OVERNIGHT |
| R/T | RADIO TELEPHONY |
| RVSM | REDUCED VERTICAL SEPARATION MINIMUM |
| SAM | SOUTH AMERICA |
| SELCAL | SELECTIVE CALLING |
| SIC | SECOND IN COMMAND |
| SID | STANDARD IN |
| SM | STATUTORY MILE |
| SOTA | SHANNON OCEANIC TRANSITION AREA |
| SSB | SINGLE SIDEBAND |
| SSR | SECONDARY SURVEILLANCE RADAR |
| SST | SUPERSONIC TRANSPORT |
| TA | TRAFFIC ADVISORY |
| TAS | TRUE AIRSPEED |
| TCAS | TRAFFIC COLLISIION AVIODANCE SYSTEM |
| TLS | TARGET LEVEL OF SAFETY |
| TMI | TRAFFIC MESSAGE IDENTIFICATION |
| UTC | COORDINATED UNIVERSITY TIME |
| VHF | VERY HIGH FREQUENCY |
| VOR | VHF OMNI DIRECTIONAL RANGE |
| WAH | WHEN ABLE HIGHER |
| WATRS | WEST ATLANTIC ROUTE SYSTEM |
