|
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
|
ICAO
|
|
Localizer performance without
vertical guidance |
LP
|
GEN
|
|
Localizer performance with vertical
guidance |
LPV
|
ICAO
|
|
localizer type directional aid
|
LDA
|
ATC
|
|
locally |
LCA |
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
|
|
low visibility operations |
LVO |
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
|
NWS
|
|
lowest temperature exceeded so late
|
LOXSL
|
NWS
|
