Definition

Contraction

Usage

SafeAir One­Federal Aviation Administration Administrator

FAA­1

ATC

SafeAir Two­Federal Aviation Administration Deputy Administrator

FAA­2

ATC

saint

ST

GEN

same direction traffic

SADT

GEN

sand or sanded or sanding

SND

GEN

sandstorm

SS

METAR

sandstorm or dusting

SA

ICAO

sanitary

SAN

ICAO

Saskatchewan

SASK

NWS

satellite

STLT

GEN

satellite communication

SATCOM

ICAO

satellite-based augmentation system

SBAS

ICAO

satisfy or satisfactory

SATFY

GEN

say time able

SAYTA

ATC

scattered

SCT

NWS

schedule

SKED

ICAO

scheduled data base

SDB

GEN

scheduled weather broadcast

SWB

GEN

sea level

SL

GEN

sea level pressure

SLP

METAR

seadrome

SEADRM

GEN

seaplane base

SPB

GEN

search

SRCH

GEN

search and rescue

SAR

GEN

search and rescue region

SRR

ICAO

second (in line)

SCND

GEN

second (time)

SEC

GEN

secondary

SRY

ICAO

secondary radar

SECRA

GEN

secondary surveillance radar

SSR

GEN

section

SXN

NWS

sector

SCTR

GEN

sector

SECT

ICAO

sector field office

SFO

GEN

sector field unit

SFU

GEN

sector manager

SECMR

GEN

security

SCTY

GEN

security control of air traffic

SCAT

GEN

security control of air traffic and air navigation aids

SCATANA

GEN

see our message

SOMSG

GEN

see your service

SYS

GEN

select

SLCT

GEN

selective calling

SELCAL

ATC

selective identification feature

SIF

ICAO

self­correcting automatic navigation

SCAN

GEN

semi­annual

S/A

GEN

semi­automatic flight inspection

SAFI

GEN

semi­automatic flight inspection aircraft

SAFI

GEN

semicolon

SCLN

GEN

send/receive center

S/RC

GEN

sensitivity

SENS

GEN

separation

SEPN

GEN

sequence

SEQ

GEN

sequence flashing lights

SFL

GEN

service

SER

ICAO

service

SVC

GEN

service available during scheduled operations

HS

ICAO

service available to meet operational requirements

HO

ICAO

serviceable

SVCBL

ICAO

serving

SVG

GEN

several

SVRL

GEN

severe

SEV

ICAO

severe

SVR

GEN

severe local storms

SELS

NWS

severe weather avoidance plan

SWAP

GEN

severe weather forecast

WW

NWS

Shall I cancel telegram number …? Or cancel telegram number …

QTA

ICAO

Shall I run my test tape/a test sentence

QJH

ICAO

shallow

MI

METAR

shallow

SHLW

NWS

shallow fog

MIFG

METAR

shift (weather reports only)

SHFT

NWS

short

SHRT

GEN

short approach lighting system

SALS

GEN

short approach lighting system with sequenced flashing lights

SALSF

GEN

short range

SRG

ICAO

short range navigation system

SHORN

GEN

short take­off and landing

STOL

GEN

shortly

SHRTLY

NWS

shortwave

SHRTWV

GEN

should

SHUD

ATC

shower

SHWR

NWS

showers

SH

METAR

shutdown

SHTDN

GEN

Sick leave

SL

GEN

Side lobe suppression

SLS

GEN

Sierra Nevada

SIERNEV

NWS

SIGMET

WS

NWS

signal

SGL

GEN

signature

SIG

GEN

signed

SGD

GEN

significant

SGFNT

GEN

significant meteorological information

SIGMET

GEN

significant weather

SIGWX

ICAO

simple approach lighting system

SALS

ICAO

simplified abbreviated visual approach slope indicator

SAVASI

GEN

simplified directional facility

SDF

GEN

simplified short approach lighting system

SSALS

GEN

simplified short approach lighting system with runway alignment indicator lights

SSALR

GEN

simplified short approach lighting system with sequenced flashers

SSALF

GEN

simulated approach

SIM

ATC

simulated flame out

SFO

ATC

simultaneous

SIMUL

GEN

simultaneous automatic broadcast homer

SABH

GEN

simultaneous compass locator at middle marker

SLMM

GEN

simultaneous compass locator at outer marker

SLOM

GEN

single

SNGL

GEN

single channel simplex

SCS

GEN

single frequency approach

SFA

GEN

single isolated wheel load

SIWL

ICAO

single sideband

SSB

ICAO

sky clear

SKC

METAR

sky condition (PIREP only)

SK

ATC

sleet

SLT

NWS

slight

SLGT

GEN

slight chance

PROB30

METAR

slope

SLP

GEN

slow

SLO

GEN

slow

SLW

ICAO

slush on runway

SLR

NWS

small

SML

GEN

smoke

FU

METAR

smooth

SMTH

NWS

snow

SN

ICAO

snow

SNW

NWS

snow and ice on runway

SIR

NWS

snow depth increase in past hour

SNOINCR

NWS

snow grains (weather reports only)

SG

METAR

snow pellets/small hail (less than 1/4”)

GS

METAR

snow showers

SHSN

METAR

snow showers

SNSH

ICAO

snowbank

SNBNK

NWS

snowfall

SNWFL

NWS

snowflake

SNFLK

NWS

so as to reach

SATR

ATC

solar­geophysical data

SGD

NWS

solid

SLD

NWS

sometime

SMTM

GEN

somewhat

SMWHT

GEN

souls on board

SOB

ATC

south or southern latitude

S

ICAO

south plains

SPLNS

NWS

southbound

SB

ICAO

southbound

SBND

ATC

south­east

SE

ICAO

south­eastbound

SEB

ICAO

southeasterly (weather reports only)

SELY

NWS

southeastern (weather reports only)

SERN

NWS

Southern Region, FAA

ASO

GEN

south­south east

SSE

ICAO

south­south west

SSW

ICAO

south­southeastern (weather reports only)

SSERN

NWS

south­southeastward (weather reports only)

SSEWD

NWS

south­southwestern (weather reports only)

SSWRN

NWS

south­southwestward (weather reports only)

SSWWD

NWS

south­west

SW

ICAO

Southwest Region, FAA

ASW

GEN

south­westbound

SWB

ICAO

southwesterly (weather reports only)

SWLY

NWS

southwestern (weather reports only)

SWRN

NWS

space environment laboratory

SEL

GEN

space environment service center

SESC

GEN

space vehicle number

SVN

GEN

special

SPL

GEN

special air­report

ARS

GEN

special handling service for aircraft

XH

GEN

special requisition priority number

SRPN

GEN

special traffic management program

STMP

ATC

special use airspace

SUA

GEN

special VFR

SVFR

GEN

specification

SPEC

GEN

spectrometric oil analysis program

SOAP

ATC

speed

SPD

GEN

speed at pilots discretion

SAPD

GEN

speed limiting point

SLP

ICAO

spiral

SPRL

GEN

spot wind

SPOT

ICAO

spray

PY

METAR

spread

SPRD

NWS

sprinkle

SPKL

NWS

squadron

SQDN

GEN

squall

SQ

METAR

squall line

SQLN

NWS

squawk

SQK

ATC

squawk mode code

SMC

GEN

stability index

SX

NWS

stabilized local oscillator

STALO

GEN

stable

STBL

GEN

stack entry time

SET

ATC

stagnation

STAGN

NWS

standard

STD

GEN

standard 2400’ high­intensity approach lighting system with sequenced flashers (Category I configuration)

ALSF­1

GEN

standard 2400’ high­intensity approach lighting system with sequenced flashers (Category II configuration)

ALSF­2

GEN

standard form

SF

GEN

standard holding pattern

SP

GEN

standard holding procedure

SHP

GEN

standard instrument approach

SIA

GEN

standard instrument approach procedure

SIAP

GEN

standard instrument departure

SID

GEN

standard jet penetration

SJP

GEN

standard low frequency range approach

SLRAP

GEN

standard omni range approach

SORAP

GEN

standard operating procedure

SOP

GEN

Standard Positioning Service

SPS

ATC

standard range approach

SR

GEN

standard regional route transmitting frequencies

RUT

ICAO

standard terminal arrival

STAR

GEN

standards and recommended practices

SARPS

ICAO

standby

SDBY

GEN

standby for further clearance

SBFC

ATC

standing lenticular altocumulus

ACSL

NWS

standing lenticular cirrocumulus

CCSL

NWS

standing lenticular stratocumulus

SCSL

NWS

start climb

STCLB

ATC

start descent

STDST

ATC

station

STN

GEN

station administrator

STADMR

GEN

station manager

STMGR

GEN

station pressure

SP

NWS

stationary

STNR

ICAO

stationary

STNRY

NWS

status

STS

ICAO

statute mile

SM

GEN

statute mile radius

SMR

GEN

steady

STDY

GEN

stereo routes

STRO

GEN

stop­end (related to RVR)

END

ICAO

stopway

STWY

GEN

stopway

SWY

ICAO

stopway light

STWL

ICAO

stored flight plan program

SFPP

ATC

stored program for alpha numerics

SPAN

GEN

storm

STM

NWS

straight in approach

STA

ICAO

straight­in approach

SI

GEN

strategic plan of operation

SPO

ATC

strategic planning team

SPT

ATC

strategic navigation

SN

GEN

stratiform

STF

ICAO

stratiform

STFRM

NWS

stratocumulus

SC

NWS

stratus

ST

NWS

stratus fractus

STFRA

NWS

strong

STG

NWS

subject terminal control release

STR

ATC

subject to

SUBJ

ICAO

subject to correction

SUBFIX

GEN

submit

SMT

GEN

subside

SBSD

NWS

substitute

SUB

GEN

sufficient

SUF

GEN

suggest

SUG

GEN

summary

SMRY

GEN

sunrise

SR

GEN

sunrise to sunset

HJ

ICAO

sunset

SS

GEN

sunset to sunrise

HN

ICAO

super high frequency

SHF

GEN

supercharge

SUPCHG

GEN

supercooled/freezing

FZ

METAR

superintendent

SUPT

GEN

superior

SUPR

GEN

supersede

SUPSD

GEN

supersonic transport

SST

ICAO

supervisor

SUPVR

GEN

supervisory electronics specialist

SES

GEN

supplement

SUPPL

GEN

supplemental weather service location

SWSL

ATC

supplementary aviation weather reporting station

SAWRS

GEN

supplementary flight plan

SPL

ICAO

supply

SUP

GEN

surface

SFC

ICAO

surface aviation observation

SAO

NWS

surface movement control

SMC

ICAO

surface movement radar

SMR

ICAO

surface picture

SURPIC

ATC

surround

SRND

GEN

surveillance approach

SA

GEN

surveillance radar approach

SRA

ICAO

surveillance radar element of precision approach radar system

SRE

ICAO

suspend

SUSP

GEN

swelling

SWLG

NWS

synchronous meteorological satellite

SMS

GEN

synopsis

SYNS

NWS

synoptic

SYNOP

NWS

system

SYS

GEN

System Command Center

SCC

GEN

system engineer

SE

GEN

systems maintenance sector

SMS

GEN

systems navigation

SN

GEN