- S
Sensitivity Level
- SAT
Static Air Temperature
- SATCOM
Satellite Communications System
- SATCOM
Satellite Communication
- SATNAV
Satellite Navigation
- SD
Secure Digital
- SEBI
Securities and Exchange Board of Indi
- SELCAL
Selective Callin
- SES
Single European Sky
- SESAR
Single European Sky ATM Research
- SID
Standard Instrument Departure
- SID
Standard Instrument Departure
- SIGMET
Significant Meteorological Advisory
- SITA
Société Internationale de Télécommunications Aéronautiques
- SIU
Satellite Interface Unit
- SMS
Safety Management Systems
- SMS
Short Messaging Service
- SNR
Signal to Noise Ratio
- SOC
Start of Climb at Missed Approach
- SPKR
Speaker
- SPT
Simplifying Passenger Travel
- SQ or SQL
Squelch
- SR
Sunrise
- SS
Sunset
- SSCV/DR
Solid State Cockpit Voice/Data Recorder
- SSCVR
Solid State Cockpit Voice Recorder
- SSFDR
Solid State Flight Data Recorder
- SSR
Secondary Surveillance Radar
- SST
Super Sonic Transport
- STAR
Standard Terminal Arrival Route
- STAR
Standard Terminal Arrival Route
- STARS
Standard Terminal Automation Replacement System
- STB
Simplifying the Business
- STC
Supplemental Type Certificate
- STEADES
Safety Trend Evaluation, Analysis & Data Exchange System
- STP
Standard Temperature and Pressure
- SUA
Special Use Airspace
- SeMS
Security Management Systems
- StB
Simplifying the Business
