|
Definition
|
Contraction
|
Usage
|
|
Laboratory
|
LAB
|
GEN
|
|
labrador
|
LABRDR
|
NWS
|
|
lake
|
LK
|
NWS
|
|
lake
reporting service
|
LRS
|
GEN
|
|
laminar
flow control
|
LFC
|
GEN
|
|
land
|
LND
|
GEN
|
|
land lines
communications facilities
|
LICOF
|
GEN
|
|
landing
|
LDG
|
ICAO
|
|
landing
|
LNDG
|
GEN
|
|
landing
direction indicator
|
LDI
|
ICAO
|
|
landing
distance available
|
LDA
|
ICAO
|
|
landing
rights airport
|
LRA
|
GEN
|
|
landing
traffic
|
LTFC
|
ATC
|
|
landline
|
LL
|
GEN
|
|
landline
teletypewriter
|
LTT
|
ICAO
|
|
large
|
LRG
|
GEN
|
|
last radio
contact
|
LARCT
|
ATC
|
|
later
|
LTR
|
GEN
|
|
lateral
navigation (from TERPSA1)
|
LNAV
|
GEN
|
|
latitude
|
LAT
|
GEN
|
|
latter
|
LTTR
|
GEN
|
|
layer or
layered or layers
|
LYR
|
NWS
|
|
lead in
lighting system
|
LDIN
|
GEN
|
|
leased
Service A/B system
|
LABS
|
ATC
|
|
leave or
leaving
|
LVE
|
ICAO
|
|
leaving
|
LV
|
GEN
|
|
leaving
|
LVG
|
ATC
|
|
left
|
L
|
ICAO
|
|
left base
|
LB
|
ATC
|
|
left side
|
LS
|
ATC
|
|
left
traffic pattern
|
LP
|
ATC
|
|
length
|
LEN
|
ICAO
|
|
letter
|
LTR
|
GEN
|
|
letter
follows
|
LETFO
|
GEN
|
|
letter of
agreement
|
LOA
|
GEN
|
|
level
|
LVL
|
ATC
|
|
level off
|
LVLOF
|
ATC
|
|
liaison
officer
|
LO
|
GEN
|
|
lift
|
LFT
|
NWS
|
|
light
|
LGT
|
GEN
|
|
light and
variable
|
LTAV
|
GEN
|
|
light and
variable
|
LV
|
ICAO
|
|
light
intensity high
|
LIH
|
ICAO
|
|
light
intensity low
|
LIL
|
ICAO
|
|
light
intensity medium
|
LIM
|
ICAO
|
|
lighted
|
LGTD
|
ICAO
|
|
lightning
|
LTNG
|
NWS
|
|
lightning
cloudtoair
|
LTGCA
|
NWS
|
|
lightning
cloudtocloud
|
LTGCC
|
NWS
|
|
lightning
cloudtocloud, cloud to ground
|
LTGCCCG
|
NWS
|
|
lightning
cloudtoground
|
LTGCG
|
NWS
|
|
lightning
cloudtowater
|
LTGCW
|
NWS
|
|
lightning
in clouds
|
LTGIC
|
NWS
|
|
like type
|
LKTYP
|
ATC
|
|
likely
|
LKLY
|
GEN
|
|
limit
|
LMT
|
GEN
|
|
limited
|
LTD
|
ICAO
|
|
Limited
Aviation Weather Reporting Station
|
LAWRS
|
GEN
|
|
line
|
LN
|
GEN
|
|
line of
position
|
LOP
|
GEN
|
|
line
squall
|
LSQ
|
ICAO
|
|
linear
polarization
|
LP
|
ATC
|
|
linearity
|
LIN
|
GEN
|
|
liquid
propane
|
LP
|
GEN
|
|
little
|
LTL
|
GEN
|
|
little
change
|
LTLCG
|
NWS
|
|
little
change in temperature
|
LCTMP
|
NWS
|
|
local
airport advisory
|
LAA
|
GEN
|
|
local
airport deicing plan
|
LADP
|
ATC
|
|
Local Area
Augmentation System
|
LAAS
|
ATC
|
|
local
control
|
LC
|
GEN
|
|
local
coordinator
|
LOCOR
|
GEN
|
|
Local Mean
Time
|
LMT
|
ICAO
|
|
local or
locally
|
LCL
|
GEN
|
|
local
standard time
|
LST
|
GEN
|
|
local
training flight
|
LTF
|
ATC
|
|
localizer
|
LLZ
|
ICAO
|
|
localizer
|
LOC
|
GEN
|
|
localizer
type directional aid
|
LDA
|
ATC
|
|
locally
|
LOC
|
ICAO
|
|
locate
|
LCT
|
GEN
|
|
location
(PIREP only)
|
OV
|
ATC
|
|
locator
|
L
|
ICAO
|
|
locator
middle
|
LM
|
ICAO
|
|
logical
acknowledgement
|
LAM
|
ICAO
|
|
logistics
|
L
|
GEN
|
|
long
distance
|
LD
|
GEN
|
|
long
distance navigation
|
LODISNAV
|
GEN
|
|
long range
|
LGRNG
|
NWS
|
|
long range
|
LRG
|
GEN
|
|
long range
accuracy
|
LORAC
|
GEN
|
|
long range
air navigation system
|
LORAN
|
GEN
|
|
long range
VHF/UHF communications
|
LRCOM
|
GEN
|
|
long wave
|
LGWV
|
GEN
|
|
longitude
|
LONG
|
GEN
|
|
longitudinal
|
LONGL
|
GEN
|
|
loose snow
on runway
|
LSR
|
NWS
|
|
low
altitude arrival/departure routing
|
LAADR
|
ATC
|
|
low
altitude bombing system
|
LABS
|
GEN
|
|
low
approach
|
LA
|
ATC
|
|
low
drifting
|
DR
|
METAR
|
|
low
drifting dust
|
DRDU
|
METAR
|
|
low
drifting sand
|
DRSA
|
METAR
|
|
low
drifting snow
|
DRSN
|
METAR
|
|
low
frequency
|
LF
|
GEN
|
|
low
frequency intersection
|
LFNT
|
GEN
|
|
low
frequency radio range
|
LFR
|
GEN
|
|
low IFR
(weather reports only)
|
LIFR
|
NWS
|
|
low index
|
LX
|
NWS
|
|
low
intensity runway edge lights
|
LIRL
|
GEN
|
|
low level
wind shear
|
LLWS
|
GEN
|
|
low level
wind shear alert system
|
LLWAS
|
GEN
|
|
low or
medium frequency long range navigational aid
|
CONSOLAN
|
GEN
|
|
low or
medium frequency radio range stations
|
RR
|
GEN
|
|
low/medium
frequency
|
L/MF
|
GEN
|
|
lower
|
LWR
|
GEN
|
|
lowest
temperature
|
LOTMP
|
NWS
|
|
lowest
temperature equaled for all time
|
LOEAT
|
NWS
|
|
lowest
temperature equaled for the month
|
LOEFM
|
NWS
|
|
lowest
temperature equaled so early
|
LOESE
|
NWS
|
|
lowest
temperature equaled so late
|
LOESL
|
NWS
|
|
lowest
temperature exceeded for all time
|
LOXAT
|
NWS
|
|
lowest
temperature exceeded for the month
|
LOXFM
|
NWS
|
|
lowest
temperature exceeded so early
|
LOXSE
|