ADI attitude direction indicator
A/G air-to-ground
AMI alpha/Mach indicator
APU auxiliary power unit
ATU audio terminal unit
AVVI altitude/vertical velocity indicator
CSS control stick steering
DCM displays and controls module
DOD Department of Defense
EMK emergency medical kit
EMU extravehicular mobility unit
ET External Tank
EVA extravehicular activity
FRCS forward reaction control system
GMT Greenwich mean time
GSFC NASA Goddard Space Flight Center
HAL/S high-order assembly language/ shuttle
HSI horizontal situation indicator
HRSI high-temperature reusable surface insulation
IUS Inertial upper stage
IVA Intravehicular activity
LCC Launch Control Center(KSC)
LDEF Long-Duration Exposure Facility
LED light-emitting diode
LOS loss of signal
LRSI low-temperature reusable surface insulation
MBK medications-and-bandage kit
MCC Mission Control Center
MCC-H Mission Control Center at Houston
MET mission-elapsed time
MLP Mobile Launcher Platform
MMS multimission modular spacecraft
MMU manned maneuvering unit
OMS orbital maneuvering system
OPF Orbiter Processing Facility(KSC)
PAM payload assist module
PLBD payload bay door
PLSS portable life-support system
POS portable oxygen system
RCC reinforced carbon-carbon
RCS reaction control system
RHC rotational hand controller
RMS remote manipulator system
RSS rotating service structure
SCA Shuttle carrier aircraft
SCAPE self-contained atmospheric pressure ensemble
SOMS Shuttle Orbiter medical system
SRB Solid Rocket Booster
SSME Space Shuttle Main Engine
SSUS spinning solid upper stage
STS Space Transportation System
tacan tactical air navigation
TAEM terminal area energy management
TDRA Tracking and Date Relay Satellite
TPS thermal protection system
WCS waste collection system