FAX—facsimile equipment
FBO—fixed base operator
FBS—fall back switch
FCC—Federal Communications Commission
FCLT—freeze calculated landing time
FCOM—FSS radio voice communications
FCPU—Facility Central Processing Unit
FDAT—flight data entry and printout (FDEP) and flight data service
FDC—flight data center
FDE—flight data entry
FDEP—flight data entry and printout
FDIO—flight data input/output
FDIOC—flight data input/output center
FDIOR—flight data input/output remote
FDM—frequency division multiplexing
FDP—flight data processing
FED—federal
FEIS—Final Environmental Impact Statement
FEP—front end processor
FFAC—from facility
FI/P—flight inspection permanent
FI/T—flight inspection temporary
FIFO—Flight Inspection Field Office
FIG—flight inspection group
FINO—Flight Inspection National Field Office
FIPS—federal information publication standard
FIR—flight information region
FIRE—fire station
FIRMR—Federal Information Resource Management Regulation
FL—flight level
FLOWSIM—traffic flow planning simulation
FM—from
FMA—final monitor aid
FMF—facility master file
FMIS—FTS2000 management information system
FMS—flight management system
FNA—final approach
FNMS—FTS2000 network management system
FOIA—Freedom Of Information Act
FONSI—finding of no significant impact
FP—flight plan
FPM—feet per minute
FRC—request full route clearance
FREQ—frequency
FRH—fly runway heading
FRI—Friday
FRZN—frozen
FSAS—flight service automation system
FSDO—Flight Standards District Office
FSDPS—flight service data processing system
FSEP—facility/service/equipment profile
FSP—flight strip printer
FSPD—freeze speed parameter
FSS—flight service station
FSSA—flight service station automated service
FSTS—federal secure telephone service
FSYS—flight service station equipment systems
FTS—federal telecommunications system
FT—feet/foot
FTS2000—Federal Telecommunications System 2000
FUS—functional units or systems
FWCS—flight watch control station
G
GA—general aviation
GAA—general aviation activity
GAAA—general aviation activity and avionics
GADO—General Aviation District Office
GC—ground control
GCA—ground control approach
GIS—geographic information system
GNAS—general national airspace system
GNSS—global navigation satellite system
GOES—Geostationary Operational Environmental Satellite
GOESF—GOES feed point
GOEST—GOES terminal equipment
GOVT—government
GP—glide path
GPRA—Government Performance Results Act
GPS—global positioning system
GPWS—ground proximity warning system
GRADE—graphical airspace design environment
GRVL—gravel
GS—glide slope indicator
GSA—General Services Administration
GSE—ground support equipment
H
H—non-directional radio homing beacon (NDB)
HAA—height above airport
HAL—height above landing
HARS—high altitude route system
HAT—height above touchdown
HAZMAT—hazardous materials
HCAP—high capacity carriers
HDG—heading
HDME—NDB with distance measuring equipment
HDQ—FAA headquarters
HEL—helicopter
HELI—heliport
HF—high frequency
HH—NDB, 2kw or more
HI-EFAS—high altitude EFAS
HIRL—high intensity runway lights
HIWAS—Hazardous lnflight Weather Advisory Service
HLDC—high level data link control
HLDG—holding
HOL—holiday
HOV—high occupancy vehicle
HP—holding pattern
HR—hour
HSI—horizontal situation indicators
HUD—housing and urban development
HWAS—hazardous in-flight weather advisory
Hz—Hertz
I
I/AFSS—international AFSS
IA—indirect access
IAF—initial approach fix
IAP—instrument approach procedures
IAPA—instrument approach procedures automation
IBM—International Business Machines
IBP—international boundary point
IBR—intermediate bit rate
ICAO—International Civil Aviation Organization
ICSS—international communications switching systems
ID—identification
IDAT—interfacility data
IDENT—identify/identifier/identification
IF—intermediate fix
IFCP—interfacility communications processor
IFDS—interfacility data system
IFEA—in-flight emergency assistance
IFO—International Field Office
IFR—instrument flight rules
IFSS—international flight service station
ILS—instrument landing system
IM—inner marker
IMC—instrument meteorological conditions
IN—inch/inches
INBD—inbound
INDEFLY—indefinitely
INFO—information
INM—integrated noise model
INOP—inoperative
INS—inertial navigation system
INSTR—instrument
INT—intersection
INTL—international
INTST—intensity
IR—ice on runway(s)
IRMP—information resources management plan
ISDN—integrated services digital network
ISMLS—interim standard microwave landing system
ITI—interactive terminal interface
IVRS—interim voice response system
IW—inside wiring
K
Kbps—Kilobits per second
Khz—Kilohertz
KT—knots
KVDT—keyboard video display terminal
L
L—left
LAA—local airport advisory
LAAS—low altitude alert system
LABS—leased A B service
LABSC—LABS GS-200 computer
LABSR—LABS remote equipment
LABSW—LABS switch system
LAHSO—land and hold short operation
LAN—local area network
LAT—latitude
LATA—local access and transport area
LAWRS—limited aviation weather reporting station
LB—pound/pounds
LC—local control
LCF—local control facility
LCN—local communications network
LCTD—located
LDA—localizer-type directional aid; landing directional aid
LDG—landing
LDIN—lead-in lights
LEC—local exchange carrier
LF—low freque
ncy
LGT—light or lighting
LGTD—lighted
LINCS—leased interfacility NAS C
LIRL—low intensity runway lights
LIS—logistics and inventory system
LLWAS—low level wind shear alert system
LLZ—localizer
LM—compass locator at ILS middle marker
LM/MS—low/medium frequency
LMM—locator middle marker
LO—compass locator at ILS outer marker
LOC—local; locally; location; localizer
LOCID—location identifier
LOI—letter of intent
LOM—compass locator at outer marker
LONG—longitude
LPV—lateral precision performance with vertical guidance
LRCO—limited remote communications outlet
LRNAV—long range navigation
LRR—long range radar
LSR—loose snow on runway(s)
LT—left turn
M
MAA—maximum authorized altitude
MAG—magnetic
MAINT—maintain, maintenance
MALS—medium intensity approach light system
MALSF—medium intensity approach light system with sequenced flashers
MALSR—medium intensity approach light system with runway alignment indicator lights
MAP—maintenance automation program; military airport program; missed approach point; modified access pricing
MAPT—missed approach point
Mbps—megabits per second
MCA—minimum crossing altitude
MCAS—Marine Corps air station
MCC—maintenance control center
MCL—middle compass locater
MCS—maintenance and control system
MDA—minimum descent altitude
MDT—maintenance data terminal
MEA—minimum en route altitude
MED—medium
METI—meteorological information
MF—middle frequency
MFJ—modified final judgment
MFT—meter fix crossing time/slot time
MHA—minimum holding altitude
Mhg—Meghertz
MIA—minimum IFR altitudes
MIDO—Manufacturing Inspection District Office
MIN—minute
MIRL—medium intensity runway lights
MIS—Meteorological Impact Statement
MISC—miscellaneous
MISO—Manufacturing Inspection Satellite Office
MIT—miles in trail
MITRE—Mitre Corporation
MLS—microwave landing system
MM—middle marker
MMAC—Mike Monroney Aeronautical Center
MMC—maintenance monitoring console
MMS—maintenance monitoring system
MNM—minimum
MNPS—minimum navigation performance specification
MNPSA—minimum navigation performance specifications airspace
MNT—monitor; monitoring; monitored
MOA—memorandum of agreement; military operations area
MOC—minimum obstruction clearance
MOCA—minimum obstruction clearance altitude
MODE C—altitude-encoded beacon reply; altitude reporting mode of secondary radar
MODE S—mode select beacon system
MON—Monday
MOU—memorandum of understanding
MPO—Metropolitan Planning Organization
MPS—maintenance processor subsystem or master plan supplement
MRA—minimum reception altitude
MRC—monthly recurring charge
MSA—minimum safe altitude; minimum sector altitude
MSAW—minimum safe altitude warning
MSG—message
MSL—mean sea level
MSN—message switching network
MTCS—modular terminal communications system
MTI—moving target indicator
MU—mu meters
MUD—mud
MUNI—municipal
MUX—multiplexor
MVA—minimum vectoring altitude
MVFR—marginal visual flight rules
N
N—north
NA—not authorized
NAAQS—national ambient air quality standards
NADA—ADIN concentrator
NADIN—National Airspace Data Interchange Network
NADSW—NADIN switches
NAILS—National Airspace Integrated Logistics Support
NAMS—NADIN IA
NAPRS—National Airspace Performance Reporting System
NAS—National Airspace System or Naval Air Station
NASDC—National Aviation Safety Data
NASP—National Airspace System Plan
NASPAC—National Airspace System Performance Analysis Capability
NATCO—National Communications Switching Center
NAV—navigation
NAVAID—navigation aid
NAVMN—navigation monitor and control
NAWAU—National Aviation Weather Advisory Unit
NAWPF—National Aviation Weather Processing Facility
NB—northbound
NCAR—National Center for Atmospheric Research, Boulder, CO
NCF—National Control Facility
NCIU—NEXRAD Communications Interface Unit
NCP—noise compatibility program
NCS—national communications system
NDB—non-directional radio beacon
NDNB—NADIN II
NE—northeast
NEM—noise exposure map
NEPA—National Environmental Policy Act
NEXRAD—next generation weather radar
NFAX—National Facsimile Service
NFDC—National Flight Data Center
NFIS—NAS Facilities Information System
NGT—night
NI—network interface
NICS—national interfacility communications system
NM—nautical mile(s)
NMAC—near mid-air collision
NMC—National Meteorological Center
NMCE—network monitoring and control equipment
NMCS—network monitoring and control system
NMR—nautical mile radius
NOAA—National Oceanic and Atmospheric Administration
NOC—notice of completion
NONSTD—nonstandard
NOPT—no procedure turn required
NOTAM—notice to airmen
NPDES—National pollutant discharge elimination system
NPE—non-primary airport entitlement
NPIAS—national plan of integrated airport systems
NR—number
NRC—non-recurring charge
NRCS—national radio communications systems
NSAP—National Service Assurance Plan
NSRCATN—National Strategy to Reduce Congestion on America’s Transportation Network
NSSFC—National Severe Storms Forecast Center
NSSL—National Severe Storms Laboratory, Norman, OK
NSWRH—NWS Regional Headquarters
NTAP—Notices To Airmen Publication
NTP—National Transportation Policy
NTSB—National Transportation Safety Board
NTZ—no transgression zone
NW—northwest
NWS—National Weather Service
NWSR—NWS weather excluding NXRD
NXRD—advanced weather radar system
O
OAG—official airline guide
OALT—operational acceptable level of traffic
OAW—off-airway weather station
OBSC—obscured
OBST—obstruction
ODAL—omnidirectional approach lighting system
ODAPS—oceanic display and processing station
OEP—operational evolution plan/partnership
OFA—object free area
OFDPS—offshore f
light data processing system
OFT—outer fix time
OFZ—obstacle free zone
OM—outer marker
OMB—Office Of Management and Budget
ONER—Oceanic Navigational Error Report
OPLT—operational acceptable level of traffic
OPR—operate
OPS—operation
OPSW—operational switch
OPX—off premises exchange
ORD—operational readiness demonstration
ORIG—original
OTR—oceanic transition route
OTS—out of service; organized track system
OVR—over
P
PABX—private automated branch exchange
PAD—packet assembler/disassembler
PAEW—personnel and equipment working
PAM—peripheral adapter module
PAPI—precision approach path indicator
PAR—precision approach radar; preferential arrival route
PARL—parallel
PAT—pattern
PATWAS—Pilots Automatic Telephone Weather Answering Service
PAX—passenger
PBCT—proposed boundary crossing time
PBRF—pilot briefing
PBX—private branch exchange
PCA—positive control airspace
PCL—pilot controlled lighting
PCM—pulse code modulation
PD—Pilot Deviation
PDAR—preferential arrival and departure route
PDC—pre-departure clearance; program designator code
PDN—Public Data Network
PDR—preferential departure route
PERM—permanent/permanently
PFC—passenger facility charge
PGP—planning grant program
PIC—principal interexchange carrier
PIDP—programmable indicator data processor
PIREP—pilot weather report
PJE—parachute jumping exercise
PLA—practice low approach
PLW—plow/plowed
PMS—program management system
PNR—prior notice required
POLIC—police station
POP—point of presence
POT—point of termination
PPIMS—personal property information management system
PPR—prior permission required
PR—primary commercial service airport
PREV—previous
PRI—primary rate interface
PRM—precision runway monitor
PRN—pseudo random noise
PROC—procedure
PROP—propeller
PSDN—public switched data network
PSN—packet switched network
PSR—packed snow on runway(s)
PSS—packet switched service
PSTN—public switched telephone network
PTC—presumed-to-conform
PTCHY—patchy
PTN—procedure turn
PUB—publication
PUP—principal user processor
PVC—permanent virtual circuit
PVD—plan view display
PVT—private
R
RAIL—runway alignment indicator lights
Pilot's Handbook of Aeronautical Knowledge (Federal Aviation Administration) Page 78
