Acronyms: S

Acronym	Name
SMA	Surface Monitor Aid
SMA	Surface movement advisor
SMART	Standard modular avionics repair and test
SMB	Serial mezzanine board
SMC	Space and Missile Systems Center (Air Force)
SMD	Standardized microcircuit drawing
SMD	Surface mount device
SMDS	Switch multimegabit data service
SME	System management entity
SMF	Systems Management Facility
SMGC	Surface Movement Guidance and Control
SMGCS	Surface Movement Guidance Control System
SMGCS	Surface Movement Guidance and Control System
SMGCS	Surface movement guidance and control systems
SMI	Standard message identifier
SMMC	System Maintenance Monitor Console
SMO	System Management Office
SMPS	Sector Maintenance Processor Subsystem
SMR	Simulator maintainability and reliability
SMR	Specialized mobile radio
SMR	Surface movement radar
SMS	Safety management system
SMS	Short messaging service
SMS	Simulation Modeling System
SMS	Spectrum monitoring system
SMT	Schedule Management Toolset
SMT	Standard message text
SMU	Sensor management unit
SMUG	Stores management upgrade system
SN	Subnetwork
SNA	System network architecture
SNAC	SN access
SNCR	SN connection reference
SNDCF	SN dependent convergence function
SNDCF/P	SNDCF/protocol
SNICF	SN independent convergence function
SNLE	SN link establishment
SNMP	Simple network management protocol
SNMPv1	SNMP version 1
SNPA	SN point of attachment
SNPDU	SN protocol data unit
SNPRM	Supplemental notice of proposed rulemaking
SNR	Signal-- to-- Noise Ratio, also: S/N
SNR	Signal-to-noise Ratio
SNR	Signal-to-noise ratio
SNSDU	SN service data unit
SNT	Staffed NextGen Tower
SOAR	System of Airports Reporting
SOC	Service Oversight Center
SOC	Service operations center
SOC	System on a chip
SOF	Special Operations Forces
SOH	Start of header
SOI	System operator instructions
SOIA	Simultaneous Offset Instrument Approaches
SOIA	Simultaneous offset instrument approach
SOIR	Simultaneous Operations On Intersecting Runways
SOIT	Satellite operational implementation team
SOIWR	Simultaneous Operations on Intersecting Wet Runways
SOM	Software operator manual
SON	Statement of operational need
SOP	Standard Operating Practice
SOP	Standard Operating Procedure
SOP	Standard Operating Procedures
SOP	Standard operating procedure
SOSCOE	System-Of-Systems Common Operating Environment
SOW	Statement of work
SP	Signal processing
SP	Surveillance Processing
SPAR	Survivability Planner Associate Re-router
SPAS	System Performance Analysis System
SPC	Storm Prediction Center
SPCR	System problem/change report
SPEAR	System performance evaluation and analysis reporting
SPI	Serial peripheral interface
SPI-IR	Surveillance performance and interoperability implementing rule
SPICE	STANS preparation integrator for CNS/ATM environment (Eurocontrol)
SPIFR	Single Pilot IFR
SPM	Software programmer’s manual
SPO	System program office
SPR	Safety and performance requirements
SPS	Software product specification
SPS	Standard Positioning Service
SPS	Standard positioning service
SPS	Stratospheric platform system
SPTF	Spectrum Policy Task Force (FCC)
SQ	Service quality
SQAP	Software quality assurance plan
SQB	SQ/billing processor
SQD	SQ data
SQP	Signal quality parameter
SRA	Safety Risk Assessment
SRAM	Static random access memory
SRAP	Sensor Receiver and Processor
SREJ	Selective reject
SRM	Safety Risk Management
SRM	Selective reject mode
SRM	Single Pilot Resource Management
SRM	Systematic risk management
SRMD	Safety Risk Management Document

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Acronyms: S