A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

SSurface analysis (current chart)
SSouth or southern latitude
SASand
SALSSimple approach lighting system
SANSanitary
SAPAs soon as possible
SARSearch and rescue
SARPSStandards and Recommended Practices (ICAO)
SATSaturday
SATCOMSatellite communication
SBSouthbound
SCStratocumulus
SCTScattered
SDBYStand by
SDFStepdown fix
SDRSpecial drawing rights
SESouth−east
SEBSouth−eastbound
SECSeconds
SECTSector
SELCALSelective calling system
SEPSeptember
SERService or servicing or served
SEVSevere (used e.g. to qualify icing and turbulence reports)
SFCSurface
SGSnow grains
SGLSignal
SH...Showers (followed by RA=rain, SN=snow, PL=ice pellets, GR=hail, GS=small hail and/or snow pellets or combinations thereof, e.g. SHRASN=showers of rain and snow)
SHFSuper high frequency (3 000 to 30 000 MHz)
SIDStandard instrument departure
SIFSelective identification feature
SIGMETInformation concerning en−route weather phenomena which may affect the safety of aircraft operations
SIGWXSignificant weather
SIMULSimultaneous or simultaneously
SIWLSingle isolated wheel load
SKCSky clear
SKEDSchedule or scheduled
SLPSpeed limiting point
SLWSlow
SMCSurface movement control
SMRSurface movement radar
SNSnow
SNOWTAMA special series NOTAM notifying the presence or removal of hazardous conditions due to snow, ice slush or standing water associated with snow, slush and ice on the movement area, by means of a specific format
SPASpanish language
SPECIAerodrome special meteorological report (in meteorological code)
SPECIALLocal special meteorological report (in abbreviated plain language)
SPLSupplementary flight plan (message type designator)
SPOTSpot wind
SQSquall
SQLSquall line
SRSunrise
SRASurveillance radar approach
SRESurveillance radar element of precision approach radar system
SRGShort range
SRRSearch and rescue region
SRYSecondary
SSSunset
SSSandstorm
SSBSingle sideband
SSESouth south east
SSRSecondary surveillance radar
SSTSupersonic transport
SSWSouth south west
STStratus
STAStraight in approach
STARStandard instrument arrival
STDStandard
STFStratiform
STNStation
STNRStacionary
STOLShort take−off and landing
STSStatus
STWLStopway light(s)
SUBJSubject to
SUNSunday
SUPSupplement (AIP Supplement)
SUPPSRegional supplementary procedures
SVCService message
SVCBLServiceable
SWSouth west
SWBSouth−westbound
SWHSignificant weather chart − high level
SWLSignificant weather chart − low level
SWMSignificant weather chart − medium level
SWYStopway
(C) 2012-18 Jan Hrkal