S
s
S/C
S/C
S/GEN
S/L
S/N
S/O
S/S
S/W
S0
S1
S2
SA
SAA
SAAAR
SAARU
S-ACE
SAD
SAE
SAF
SAHR
SAI
SAL
SALS
SAM
SAMA
SAMM
SAMP
SAP
SAR
SARG
SARPS
SARSAT
SAS
SAT
STANDARD INSTRUMENT DEPARTURE (SID)
SATCOM
SATELLITE
SATNAV
SATURATED AIR
SB
SBAC
SBAS
SBC
SBD
SBE
SBFIR
SBI
SBIT
SBL
SBS
SC
SC1
SCAN ANGLE
SCAT
SCAT-1
SCC
SCD
SCDU
SCE
SCFM
SCID
SCIU
SCL
SCM
SCN
SCPC
SCQA
SCR
SCRUB
SCS
SCSI
SCT
SCU
SD
SD&AHWG
SDD
SDF
SDI
SDM
SDP
SDRAM
SDRL
SDS
SDU
SEARCH AND RESCUE FACILITY
SEARCH MODE
SEAT PITCH
SEB
SEC
SECONDARY COSMIC RAYS
SECT
SECU
SED
SEI
SEL
Sel jett
SELCAL
SELECT CODE
SELENOCENTRIC
SELENOGRAPHIC
SENS
SENSIBLE ATMOSPHERE
SENSITIVITY LEVEL COMMAND
SENSOR
SEP
SEPARATION
SEPARATION MINIMA
SEPC
SEPP
SEQ
SERNO
SERV
SERVICE TOWER
SEU
SFA
SF-ACE
SFAR
SFC
SFCL
SFDF
SFE
SFI
SG
SGEN
SGML
SGP
SGS
SGT
SH
SHADOWGRAPH
SHF
SHIELD
SHOCK TUBE
SHORE LINE EFFECT
SHOT
SHOWER
SHP
SHT
SI
SIAP
SICAS
SICASP
SID
SIDEREAL
SIDETONE
SIF
SIG
SIG COND
SIGMET
SIGMETS
SIL
SIM
SIMPLEX
SIMULATOR
SINAD
SIP
SIT
SITA
SITP/D
SITR
SITS
SIU
SJ
SKIP ZONE
SKP
SKS
SKY WAVE
SL
SLA
SLAM
SLANT RANGE
SLANT RANGE ERROR
SLATS
SLC
SLD
SLEET
SLH
SLI
SLM
SLOC
SLS
SLUC
SLV
SLVD
SM
SMA
SMC
SMD
SMDR
SMDS
SME
SMGCS
SMI
SMK
SMKG
SMLS
SMM
SMOG
SMPL
SMRD
SMS
SMT
SN
SNA
SNAC
SNACP
SNACR
SNAP
SNDCF
SNDCP
SNICF
SNLE
SNMP
SNOW
SNPA
SNPDU
SNR
SNSDU
SNSR
SOF
SOFT HAIL
SOH
SOI
SOIT
SOL
SOLAR RADIATION
SOLAR WIND
SOLID PROPELLANT
SOLID-PROPELLANT ROCKET ENGINE
SOM
SON
SONIC
SONIC BOOM
SONIC SPEED
SOP
SOPA
SOPHISTICATED
SOS
SOT
SOUNDING
SOUNDING BALLOON
SOUNDING ROCKET
SOURCE REGION
SOV
SOW
SP
SPACE
SPACE EQUIVALENT
SPACE MEDICINE
SPACE PROBE
SPACE REDDENING
SPACE SIMULATOR
SPACE-AIR VEHICLE
SPACECRAFT
SPATE
SPATIAL
SPC
SPCC
SPD
SPDA
SPDT
SPE
SPECIAL VFR CONDITIONS (SPECIAL VFR MINIMUM WEATHER CONDITIONS)
SPECIAL VFR OPERATIONS
SPECIFIC IMPULSE
SPECTROMETER
SPECTRUM
SPEED BREAKERS
SPEED OF LIGHT
SPI
SPIP
SPKR
SPLR
SPLY
SPM
SPMR
SPOILERS
SPOKING
SPOP
SPR
SPRT
SPRV
SPRV S
SPS
SPST
SQ
SQ OR SQL
SQB
SQD
SQL
SQP
SQUALL
SQUALL LINE
SQUALL LINE
SQUAWK
SQUELCH
SQUITTER
SR
SRADD
SRAM
SRAM0
SRAMP
SRC
SRD
SREJ
SRM
SRMI
SRN
SRP
SRR
SRS
SRT
SRU
SRX
SS
SSA
SSB
SSCV/DR
SSCVR
SSEC
SSFDR
SSI
SSID
SSLC
SSM
SSM
SSP
SSPC
SSSC
SSTO
SSU
ST
ST. ELMO S FIRE
STA
STAB
STADARD ATMOSPHERE
STADARD SERVICE VOLUME
STAGE
STAGE 2
STAGE 3
STAGE-AND-A-HALF
STALL
STANAG
STANDARD ATMOSPHERE
STANDARD TERMINAL ARRIVAL ROUTE (STAR)
STANDBY MODE
STAR
STARS
STAT
STATIC
STATIC PORTS
STATIC PRESSURE
STATIC RAM
STATIC SOURCE ERROR (SSEC)
STATIONARY ORBIT
STB
STBY
STBYC
STC
STCM
STD
STDBY
STDMA
STEPCLB
STEREO
STG
STGR
STIM XX
STIU
STM
STO
STOL
STOR HDG ALIGN
STORM
STOS
STP
STR
STRAIGHT-IN APPROACH IFR
STRAIGHT-IN APPROACH VFR
STRATIFORM
STRATOCUMULUS
STRATOSPHERE
STRATUS
STRF
STS
STX
SU
SUA
SUBATOMIC PARTICLE
SUBLIMATION
SUBSIDENCE
SUBSONIC
SUC
SUL
SUNSPOT
SUNSPOT CYCLE
SUO
SUPER-HETERODYNE RECEIVER
SUPERSONIC
SUPERSONIC FLIGHT
SUPPR
SUPPRESSOR PULSE
SUPPS
SUR
SURVEILLANCE APPROACH
SURVIVAL RADIO EQUIPMENT
SUSTAINER ENGINE
SUT
SV
SVA
SVC
SVC
SVCE
SVDU
SVO
SVRR
SVS
SVT
SVU
SW
SWAP
SWG
SWIM
SWIR
SWIT
SWPM
SWR
SWRD
SWT
SX
SXGA
SXTK
SYN/DIG
SYNC
SYNCHRONOUS SATELLITE
SYNERGIC CURVE
SYNOPTIC CHART
SYNOPTIC METEOROLOGY
SYNTH
SYS
SYSCAT-B
SYSCI