Acronyms: S

Acronym	Name
SDIS	Switched Digital Integrated Service
SDL	Software data loader
SDLC	Software Development Life Cycle
SDLC	Synchronous data link control
SDM	Software development methodology
SDP	Service Delivery Point
SDP	Software development plan
SDR	Service Difficulty Report
SDR	Software defined radio
SDR	Software-defined radio
SDR	System Documentation Release
SDR	System design review
SDRAM	Synchronous dynamic random access memory
SDS	Switched Data Service
SDU	Satellite data unit
SE	Systems engineering
SE-Vision	Synthetic-enhanced vision
SEC	Aircraft information security working group (AEEC)
SEC	Software enabled control
SEC	Strategic Event Coordination
SECAM	Sequential color with memory
SECM	Safety and Environmental Compliance Manager
SECRA	Secondary Radar
SEI	Software Engineering Institute
SEI	Special Emphasis Item
SEL	Select identifier
SEL	Single Event Level
SELCAL	Selective calling
SELF	Simplified Short Approach Lighting System With Sequenced Flashing Lights
SEMP	System engineering management plan
SEOAT	Systems Engineering Operational Analysis Team
SERC	Software Engineering Resource Center
SERFI	Special Emphasis Request for Information
SESAR	Single European Sky Air Traffic Management Research program (Eurocontrol)
SET	Spacing Efficiency Tool
SETA	System engineering and technical assistance
SEWG	Security working group
SFAR	Special Federal Aviation Regulations
SFAR	Special federal regulation
SFAR-- 38	Special Federal Aviation Regulation 38
SFAR-38	Special Federal Aviation Regulation 38
SFD	Service Flow Diagram
SFDF	Subsystem fault detection function
SFE	Supplier (or seller)-furnished equipment
SFL	Sequenced Flashing Lights
SFR	Special Flight Rules
SFRA	Special Flight Rules Area
SFT	Software fault tolerance
SG	Subgroup
SGI	Silicon Graphics Incorporated
SGI	Special Government Interest
SHPO	State Historic Preservation Officer
SHRP	Strategic Highway Research Program
SI&T	Software integration and test
SIAP	Standard Instrument Approach Procedure
SIAP	Standard Instrument Flight Procedure
SIC	Service Initiation Charge
SICAS	Secondary surveillance radar improvements and collision avoidance systems
SICASP	SICAS Panel (ICAO)
SID	Standard Instrument Departure
SID	Standard instrument departure
SID	Station Identifier
SIGINT	Signals intelligence
SIGMET	Significant Meteorological Information
SIGMET	Significant meteorological information
SIL	Source integrity level
SIL	Surveillance integrity level
SIMMOD	Airport and Airspace Simulation Model
SIMMOD	Airspace and Airport Simulation Model
SINCGARS	Single-channel ground and airborne radio system
SIP	State Implementation Plan
SIPRNET	Secret internet protocol route network (U.S. Army)
SIR	Screening Information Request
SIS	Signal in space
SISG	Systems Implementation Subgroup (IATA)
SIT	System integration and test
SITA	Societe Internationale de Telecommunications Aeronautiques
SITD	System integration test description
SITP	System integration test plan
SITP/D	SITP/description
SITR	System integration test report
SITS	Security Integrated Tool Set
SIU	Server interface unit
SIWG	Seat integration
SJU	SESAR Joint Undertaking
SKPP	Separation kernels in environments requiring high robustness
SKT	Station-keeping technology
SLA	Service level agreement
SLC	Synchronous link control
SLEP	Service Life Extension Program
SLH	System level health
SLI	System level interface
SLM	Standard length message
SLS	Satellite landing system
SLUC	System level use case
SLV	Service level verifier
SLoC	Source lines of code
SM	Statute Mile
SM	Statute Miles
SM	Systems management

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Acronyms: S