GEN 2.2 Abbreviations Used in AIS Publications

GEN 2.2

A
/	and
A/C	approach control
AAM	Advanced Air Mobility
AAS	airport advisory service
ICAO:	AAP - approach control; AC - altocumulus
acft	aircraft
ACR	air carrier
ADF	automatic direction finder
AER	approach end runway
AFIS	Automatic Flight Information Service
aft	after
AGL	above ground level
AHRS	Attitude Heading Reference System
AIM	Aeronautical Information Manual
AIS	Aeronautical Information Services
ALS	approach light system
ALSF-1	standard 2400' high-intensity approach lighting system with sequenced flashers (Category I configuration)
ALSF-2	standard 2400' high-intensity approach lighting system with sequenced flashers (Category II configuration)
ALSTG	altimeter setting
alt	altitude
altm	altimeter
altn	alternate
amdt	amendment
ICAO:	AMD - amendment
apch	approach
apchg	approaching
aprx	approximate
apv	approve or approved or approval
ARAC	Army Radar Approach Control facility (US Army)
arpt	airport
aTO	Air Traffic Organization
ICAO:	AD - aerodrome
arr	arrive or arrival
ARSR	air route surveillance radar
ARTCC	air route traffic control center
ASDE	airport surface detection equipment
asph	asphalt
ASSC	Airport Surface Surveillance Capability
ATCT	air traffic control tower
ATD	along-track distance
ASR	airport surveillance radar
ATIS	automatic terminal information service
avbl	available
awy	airway
B
BC	back course
bcn	beacon
bcst	broadcast
bldg	building
brg	bearing
btn	between
bVLOS	Beyond Visual Line of Sight
byd	beyond
C
CAT	category
ICAO:	CAT - clear air turbulence
CBO	Community-Based Organization
CFR	Code of Federal Regulations
CFR	crash fire rescue
clnc	clearance
ICAO:	CLR - clear/cleared to/clearance
clsd	close or closed or closing
cmsnd	commissioned
cntr	center
cntrln	centerline
ICAO:	CL - centerline
CoA	Certificate of Waiver or Authorization
Comlo	compass locator
const	construction
cpty	capacity
crs	course
ctc	contact
ICAO:	CTR - control zone
D
ICAO:	D - danger area
ICAO:	D - downward (tendency in RVR during previous 10 minutes)
dalgt	daylight
dcmsnd	decommissioned
DDT	runway weight bearing capacity for aircraft with double dual-tandem type landing gear
degs	degrees
ICAO:	C - degrees Celsius (Centigrade) F - degrees Fahrenheit
dep	depart; departure
ICAO:	DEP - depart/departure/departure message
DF	direction finder
ICAO:	DF - I am connecting you to the station you request
DH	decision height
DME	UHF standard (TACAN compatible distance measuring equipment)
ICAO:	DME - distance meaning equipment
dsplcd	displaced
dstc	distance
ICAO:	DIST - distance
DT	runway weight bearing capacity for aircraft with dual-tandem type landing gear
durg	during
ICAO:	DRG - during
DVFR	defense visual flight rule
DW	runway weight bearing capacity for aircraft with dual-wheel type landing gear
E
E	east
ICAO:	E - east/east longitude
equip	equipment
ICAO:	EQPT - equipment
ETA	estimated time of arrival
ETE	estimated time en route
excp	except
ICAO:	EXC-except
extd	extend or extended
F
FAF	final approach fix
FAR	Federal Aviation Regulation
FDC	flight data center
Fl/P	flight information (permanent)
Fl/T	flight information (temporary)
FL	flight level
FM	fan marker
FM	from
ICAO:	FM - from; FM - from (followed by time weather change is forecast to begin)
freq	frequency
frIA	FAA-Recognized Identification Area
frq	frequent
FSS	Flight Service Station
ft	feet
G
govT	government
GP	glide path
ICAO:	GP - glide path
GS	glide slope
ICAO:	GS - ground speed; GS - small hail and/or snow pellets
GWT	gross weight
H
HAA	height above airport
HAT	height above touchdown
HAZMAT	Hazardous Material
ICAO:	HGT - height/height above
HIRL	High intensity runway lights
hol	holiday
hwy	highway
I
IAF	initial approach fix
IAP	instrument approach procedure
ICAO:	INA - initial approach
ident	identification
ICAO:	ID - identifier/identification/identify
IF	intermediate fix
ICAO:	IF - intermediate approach fix
IFR	instrument flight rules
IFSS	international flight service station
ILS	instrument landing system
info	information
inop	inoperative
INS	Inertial Navigation System
int	intersection
intl	international
intst	intensity
IRU	Inertial Reference Unit
J
J-bar	jet runway barrier
K
kHz	kilohertz
L
L	left (used only to designate rwys; e.g., rwy 12L)
ICAO:	L - left/runway identification/locator
laANC	Low Altitude Authorization and Notification Capability
lat	latitude
lb	pounds (weight)
lctd	located
LDA	localizer type directional aid
ICAO:	LDA - landing distance available LLZ - localizer
lgtd	lighted
LMM	compass locator at ILS middle marker
lndg	landing
ICAO:	LDG - landing
loc	localizer
ICAO:	LOC-localizer or locally or location or located
LOM	compass locator at ILS outer marker
long	longitude
LRCO	limited remote communications outlet
M
MAA	maximum authorized altitude
mag	magnetic
maint	maintain, maintenance
ICAO:	MNTN - maintain; MAINT - maintenance
MALS	medium intensity approach light system
MALSR	medium intensity approach light system with runway alignment indicator lights
MAP	missed approach point
ICAO:	MAP - aeronautical maps and charts
max	maximum
MCA	minimum crossing altitude
MDA	minimum descent altitude
MEA	minimum en route IFR altitude
MGOW	Maximum Gross Operating Weight
MHz	megahertz
min	minimum or minute
MIRL	medium intensity runway edge lights
MM	middle marker ILS
MOCA	minimum obstruction clearance altitude
MRA	minimum reception altitude
MSA	minimum safe altitude
MSL	mean sea level
muni	municipal
N
N	north
NA	not authorized
natl	national
navaid	navigational aid
NDB	nondirectional radio beacon
NM	nautical mile(s)
NOPT	no procedure turn required
Nr	number
O
obstn	obstruction
OCA	Oceanic Control Area
ODALS	omnidirectional approach lighting system
OM	outer marker ILS
OOP	Operations Over People
oper	operate
opn	operation
ICAO:	OPR - operator/operate/operative/ operating/operational
orig	original
OTS	out of service
ovrn	overrun
P
PAO	Public Aircraft Operation
PAR	precision approach radar
pat	pattern
pBCS	Performance-Based Communication and Surveillance
PCN	pavement classification number
permly	permanently
pIC	Pilot-in-Command
POB	persons on board
PPR	prior permission required
proc	procedure
Q
quad	quadrant
R
R	right (used only to designate rwys; e.g., rwy 19R)
ICAO:	R - received (acknowledgement of receipt)/red/restricted area (followed by identification)/right (runway identification)
RADAR	radio detection and ranging
RAPCON	Radar Approach Control facility (USAF, USN and USMC)
RATCF	Radar Air Traffic Control Facility (USN and USMC)
RC	Radio-Controlled
RCAG	remote center air/ground
RCLS	runway centerline lights system
ICAO:	RCL - runway centerline
RCO	remote communications outlet
rcv	receive
rcvg	receiving
REIL	runway end identifier lights
req	request
rID	Remote Identification
RNAV	area navigation
RPIC	Remote Pilot-in-Command
RRP	runway reference point
REL	runway entrance lights
RLLS	Runway Lead-in Light System
rstrd	restricted
RTS	returned to service
RVR	runway visual range
RVRM	runway visual range midpoint
RVRR	runway visual range rollout
RVRT	runway visual range touchdown
RWSL	runway status light
rwy	runway
ICAO:	RWY-runway
S
S	runway weight bearing capacity for aircraft with single-wheel type landing gear
S	south
ICAO:	S - south/south latitude
SAA	Sense and Avoid
SDF	simplified directional facility
sec	second
sfc	surface
SFL	sequenced flashing lights
SGI	Special Government Interest
SI	straight-in approach
ICAO:	STA - straight-in approach
SM	statute mile(s)
SR	sunrise
SS	sunset
ICAO:	SS - sandstorm
SSALF	simplified short approach lighting system with sequenced flashers
SSALR	simplified short approach lighting system with runway alignment indicator lights
SSALS	simplified short approach lighting system
STOL	short take-off and landing runway
ICAO:	STOL - short takeoff and landing
sUAS	Small UAS
svc	service
ICAO:	SVC - service message
T
T	true (after a bearing)
ICAO:	T - temperature
TAC	terminal area chart
TACAN	UHF navigational facility - omnidirectioal course and distance information
ICAO:	TACAN - VHF tactical navigational aid
TAS	true air speed
TCH	threshold crossing height
ICAO:	TEMPO - Temporary/temporarily
tfc	traffic
THL	takeoff hold lights
thr	threshold
thru	through
ICAO:	THRU - through/I am connecting you to another switchboard
tkof	take-off
temprly	temporarily
ICAO:	TMA - TERMINAL CONTROL AREA
tmpry	temporary/temporarily
TPA	traffic pattern altitude
TRACON	terminal radar approach control
trml	terminal
TRSA	terminal radar service area
TRUST	The Recreational UAS Safety Test
tsnt	transient
twr	tower
twy	taxiway
U
ICAO:	U/S - unserviceable
uaM	Urban Air Mobility
uaS	Unmanned Aircraft System
uaSFM	UAS Facility Map
uavbl	unavailable
UHF	ultra high frequency
unlgtd	unlighted
unmon	unmonitored
unsked	unscheduled
unusbl	unusable
uTM	UAS Traffic Management
V
VASI	visual approach slope indicator
vcnty	vicinity
VDP	visual descent point
VFR	visual flight rules
VHF	very high frequency
VOR	VHF omni-directional radio range
VLOS	Visual Line of Sight
VO	Visual Observer
VORTAC	Combined VOR and TACAN system (collocated)
VOT	a VOR Receiver testing facility
vsby	visibility
ICAO:	VIS - visibility
W
W	west
wea	weather
ICAO:	WX - weather
wkday	weekday
wkend	weekend
wpt	waypoint
WS	Weather Service
wt	weight
Z
Z	Coordinated Universal Time
ICAO:	UTC - Coordinated Universal Time